Wednesday, February 29, 2012

Where to get CDC42 + PAK6 complex?

Description of CDC42 + PAK6 complex
Serine/threonine-protein kinase PAK 6 is an enzyme that in humans is encoded by the PAK6 gene.
PAK6 encodes a protein that shares a high degree of sequence similarity with p21-activated kinase (PAK) family members. The proteins of this family are Rac/Cdc42-associated Ste20-like Ser/Thr protein kinases, characterized by a highly conserved amino-terminal Cdc42/Rac interactive binding (CRIB) domain and a carboxyl-terminal kinase domain. PAK kinases are implicated in the regulation of a number of cellular processes, including cytoskeleton rearrangement, apoptosis and the MAP kinase signaling pathway. The protein encoded by this gene was found to interact with androgen receptor (AR), which is a steroid hormone-dependent transcription factor that is important for male sexual differentiation and development. The p21-activated protein kinase 6 gene was found to be highly expressed in testis and prostate tissues and the encoded protein was shown to cotranslocate into the nucleus with AR in response to androgen.
Six members of the p21-activated kinase (PAK) family of protein kinases have been identified to date. PAK’s are serine/threonine kinases and can be classified into two groups named group I (PAK 1-3), and group II (PAK6) based on their sequence homology and regulatory properties. In addition to the C-terminal Ste20-like catalytic domain, PAK kinases contain a Cdc42/Rac-interactive binding (CRIB) domain. PAK family members have been implicated in the regulation of multiple cellular functions, including actin reorganization, apoptotic signaling, cell motility, gene transcription, cell transformation and steroid hormone receptor signalling.
The binding of activated GTP-bound Cdc42 or Rac to group I PAKs dramatically stimulates their ability to phosphorylate exogenous substrates. In contrast, the group II PAK kinase PAK4 and PAK5 are active in the absence of GTPases and their enzymatic activity is not further stimulated by binding of activated GTPase. The reason for this difference in regulation is most likely due to the lack of an inhibitory switch domain in group II PAK’s which releases the active site upon binding of GTPases. However, GTPase binding has been shown to mediate kinase relocalization. For example upon binding of Cdc42, PAK4 relocalizes to the Golgi, and PAK5 shuttles from the microtubule network to actin-rich structures.
Here we present the crystal structure of activated cdc42 in complex with the CRIB domain of PAK6, the complex when formed is believed to coordinate the cellular relocalizarion of the kinase.
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What is Zinc wire used for?

Features:Zinc wire looks smooth and bright, no broken wires, no oil, and a single glitch, no scratches and scars, no card in the process of applying shot phenomenon.
Benefits
Purity Zn > 99,995%, DIN 1706, EN 117921, quality certificate of the raw material SFS-ISO 9002 (EN 29112).
Low Cadmium content Cd 0,0002 - 0,0005 = only ca. 50% of the highest content allowed according to DIN 1706,
EN 117921.
Remarkable adhesiveness of zinc.
Clean and smooth surface of the wire (good electric conductivity and high durability of nozzle).
Applications
Gas bottles and gas tanks
Cast-iron pipes
Capacitors
LPG cylinders
Bridges
Shielding (screening) against electromagnetic waves
Zinc wire is a basic material for anticorrosion protection of metals with metallization and for production of electrical condensers.
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Where to get Sputum Cells?


Sputum Cell is mucus that is coughed up from the lower airways. It is usually used for microbiological investigations of respiratory infections.
The best sputum samples contain very little saliva, as this contaminates the sample with oral bacteria. This event is assessed by the clinical microbiologist by examining a Gram stain of the sputum. More than 25 squamous epithelial cells at low enlargement indicates salivary contamination.
Purulent Sputum contains a lot of pus, composed of white blood cells, cellular debris, dead tissue, serous fluid and viscous liquid (mucus). Mostly, it's yellow in color, as well as green. That is always seen in cases of bronchiectasis, lung abscess, or advanced stage of bronchitis, acute upper respiratory tract infection (cold, laryngitis).
Sputum Cell is a mucousy substance (consisting of cells and other matter) that is secreted into the airways of the respiratory tract. Sputum is not the same as saliva, a substance secreted in the mouth to help with digestion.
Sputum cell counts are also useful to study the potential anti-inflammatory effects of drugs like theophylline, long-acting β-adrenoceptor agonists, leukotriene antagonists and newer drugs in development. They may be helpful to select add-on therapy to corticosteroids in ‘difficult-to-control’ asthma.
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Tuesday, February 28, 2012

Properties of Zirconium dioxide

Zirconium dioxide (ZrO2), sometimes known as zirconia (not to be confused with zircon), is a white crystalline oxide of zirconium. Its most naturally occurring form, with a monoclinic crystalline structure, is the rare mineral baddeleyite. The high temperature cubic crystalline form is rarely found in nature as mineral tazheranite (Zr,Ti,Ca)O2 (and a doubtful mineral arkelite). This form, also called cubic zirconia, is synthesized in various colours for use as a gemstone and a diamond simulant.
Uses
The cubic phase of zirconia also has a very low thermal conductivity, which has led to its use as a thermal barrier coating or TBC in jet and diesel engines to allow operation at higher temperatures. Another low thermal conductivity use is a ceramic fiber insulation for crystal growth furnaces, fuel cell stack insulation and infrared heating systems. Thermodynamically the higher the operation temperature of an engine, the greater the possible efficiency (see Carnot heat engine). As of 2004, a great deal of research is ongoing to improve the quality and durability of these coatings.
It is used as a refractory material, in insulation, abrasives, enamels and ceramic glazes. Stabilized zirconia is used in oxygen sensors and fuel cell membranes because it has the ability to allow oxygen ions to move freely through the crystal structure at high temperatures. This high ionic conductivity (and a low electronic conductivity) makes it one of the most useful electroceramics.
This material is also used in the manufacture of subframes for the construction of dental restorations such as crowns and bridges, which are then veneered with a conventional feldspathic porcelain.
Zirconium dioxide can occur as a white powder which possesses both acidic and basic properties. On account of its infusibility and brilliant luminosity when incandescent, it was used as an ingredient of sticks for limelight.
Zirconia is also an important high-k dielectric material that is being investigated for potential applications as an insulator in transistors in future nanoelectronic devices and as electrolyte films in solid oxide fuel cells. For such applications Zirconia can be applied from suspension using a method of electrophoretic deposition.
Properties
Zirconium dioxide is one of the most studied ceramic materials. Pure ZrO2 has a monoclinic crystal structure at room temperature and transitions to tetragonal and cubic at increasing temperatures. The volume expansion caused by the cubic to tetragonal to monoclinic transformation induces very large stresses, and will cause pure ZrO2 to crack upon cooling from high temperatures. Several different oxides are added to zirconia to stabilize the tetragonal and/or cubic phases: magnesium oxide (MgO), yttrium oxide, (Y2O3), calcium oxide (CaO), and cerium(III) oxide (Ce2O3), amongst others.
Zirconia is often more useful in its phase 'stabilized' state. Pure Zirconia when heated goes through disruptive phase changes. By adding small percentages of yttria, these phase changes are eliminated, and the material has better thermal, mechanical and electrical properties. In some cases, the tetragonal phase can be metastable. If sufficient quantities of the metastable tetragonal phase is present, then an applied stress, magnified by the stress concentration at a crack tip, can cause the tetragonal phase to convert to monoclinic, with the associated volume expansion. This phase transformation can then put the crack into compression, retarding its growth, and enhancing the fracture toughness. This mechanism is known as transformation toughening, and significantly extends the reliability and lifetime of products made with stabilized zirconia.
The ZrO2 band gap is dependent on the phase (cubic, tetragonal, monoclinic, or amorphous) and preparation methods, with typical estimates from 5–7 eV
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Monday, February 27, 2012

What is CAMK2G (Assoc. domain)?

Description of CAMK2G (Assoc. domain)
The protein kinase CAMK2γ is ubiquitously expressed and forms oligomeric, ring like structures composed of 6-12 subunits. There are four isoforms present in mammalian cells (alpha, beta, gamma, and delta).
CAMK2γ is one of the most important transducers of Ca2+ signals and has been linked to a multitude of regulatory pathways. For example, regulatory functions for CAMK2γ have been suggested in cardiomyocyte apoptosis, memory, influencing immature T cell lifespan and T cell memory function and modulation of TCR signalling strength. A scaffolding function for the assembly of a postsynaptic signalosome, a role as mediator of synaptic plasticity and in bipolar spindle formation, as well as regulation of osteoclastogenesis has also been proposed.
The overall organization of each of the four CAMK2γ isoforms is similar: an N-terminal catalytic domain is followed by a regulatory domain that contains an autoinhibitory region with a calmodulin (CaM) binding site and a C-terminal association domain, through which the subunits interact to assemble into holoenzymes. A variable domain is located between the CaM-binding domain and the association domain. Most splice variant differences map to this region. CAMK2γ is activated by a two step activation process: The first activation event involves the dissociation of the autoinhibitory regulatory segment. This process involves binding of Ca2+/ CaM which leads to the exposure of a regulatory threonine residue. The now accessible threonine is phophorylated by a neighboring kinase domain within the oligomeric dodecameric assembly. Once activated phophorylation prevents rebinding of the regulatory segment to the kinase domain and binding of Ca2+/ CaM . Thus, at high Ca2+/CaM concentration the phosphorylation at the regulatory threonine propagates rapidly through the holoenzyme resulting in active Ca2+/ CaM -independent CAMK2γ.
Surprisingly, the structure of the association domain of mouse CAMK2α revealed a stacked arrangement of two 7-fold symmetric rings which has been attributed to the lacking kinase domain in the complex. However this association behavior might be specific for the alpha isoform or splice variant used. Here we present the structure of the association domain of in CAMK2γ in its dodecameric association state.
CAMK2G (Assoc. domain) that functions autonomously after Ca(2+)/calmodulin-binding and autophosphorylation, and is involved in sarcoplamic reticulum Ca(2+) transport in skeletal muscle and may function in dendritic spine and synapse formation and neuronal plasticity. In slow-twitch muscles, is involved in regulation of sarcoplamic reticulum (SR) Ca(2+) transport and in fast-twitch muscle participates in the control of Ca(2+) release from the SR through phosphorylation of the ryanodine receptor-coupling factor triadin. In neurons, may participate in the promotion of dendritic spine and synapse formation and maintenance of synaptic plasticity which enables long-term potentiation (LTP) and hippocampus-dependent learning.  
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Specifications of Cerium (III) iodide

Cerium (III) iodide
CAS Number: 7790-87-6
Molecular Weight: 520.83
Molecular Formula: CeI3
Physical Appearance: powder
Melting point: 761 ° C
Boiling point: 1397 ° C
Solubility:-205kJ/mol at 20 ° C water
Cerium (III) iodide is generally immediately available in most volumes. High purity, submicron and nanopowder forms may be considered. Iodide compounds are used in internal medicine. Treating an iodide with manganese dioxide and sulfuric acid sublimes the iodine.
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Descriptions of Carbohydrate antigen 50(CA50) quantitative detection Kit (TRIFA)

Description of Carbohydrate antigen 50(CA50) quantitative detection Kit (TRIFA)
Carbohydrate antigen 50(CA50) quantitative detection Kit (TRIFA) is based on a solid phase sandwich enzyme-linked immunosorbent assay. The assay system utilizes one anti-CA50 monoclonal antibody for solid phase (microtiter wells) immobilization and as antibody-enzyme (horseradish peroxidase) conjugate reagent.The Autobio carbohydrate antigen 50 (CA50) chemiluminescence Carbohydrate antigen 50(CA50) quantitative detection Kit (TRIFA) is intended for the quantitative determination of CA50 concentration in human serum.
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Sunday, February 26, 2012

What is Anti-Nogo-A/NEP?

The therapy, known as Anti-Nogo-A/NEP, may be used to restore function even after ischemic brain damage has occurred, according to senior author Gwendolyn Kartje, MD, PhD, and colleagues. Nogo-A is a protein that inhibits the growth of nerve fibers. In anti-Nogo therapy, an antibody disables the Nogo protein, allowing for the growth of axons in the stroke-affected side of the body and the restoration of functions lost from stroke.
Rats that had received anti-Nogo therapy in the study regained 78 percent of their ability to grab pellets nine weeks after stroke, while rats that did not receive the treatment regained 47 percent of that same ability.
Anti-Nogo-A/NEP "can induce remarkable compensatory sprouting and fiber growth, indicating the responsiveness of the chronically injured brain to form new neural networks under the proper growth conditions," according to the study.
And the therapy's benefits aren't exclusive to stroke patients. The findings point to possible therapies for patients who suffer from spinal-cord injury and neurological disability due to brain damage.
Nogo-A is a myelin-associated neurite outgrowth inhibitory protein limiting recovery and plasticity after central nervous system injury.
Anti-Nogo is a treatment enhances corticospinal tract sprouting and functional recovery after unilateral cervical lesion in adult primates
NogoA is a member of a family of integral membrane proteins termed reticulons that are thought to be involved in numerous disorders including neurodegenerative diseases. Re ticulon proteins are known to regulate many cellular processes and interact with multiple proteins and receptors such as BACE (reviewed in 1). NogoA was initially identified as a myelin-associated neurite outgrowth inhibitor. It is highly expressed in oligodendrocytes in the white matter of the CNS; blocking its activity with antibodies or other factors results in improved axon regrowth and functional recovery in experimental CNS lesion models. NogoA has also been suggested to play a role in neurodegenerative diseases such as Amyotrophic lateral sclerosis, in which case NogoA is found at elevated levels in postmortem muscular samples, and multiple sclerosis (MS), in which case autoantibodies to NogoA have been found in serum andcerebrospinal fluid in MS patients. Despite its predicted molecular weight, NogoA typically migrates at 180kDa in an SDS-PAGE. At least five isoforms of Nogo are known to exist; this antibody is specific for NogoA.
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Specifications of Holmium(III) iodide

Holmium(III) iodide
CAS:13813-41-7
Molecular formula: HoI3
Molecular Weight:545.64g/mol
Description of Holmium(III) iodide
Appearence:light yellow flake
grade anhydrous
assay 99.99% trace metals basis
form flakes
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Friday, February 24, 2012

Where to get Cervical cells?

Cervical cells means disordered growth. It is easier to understand cervical dysplasia if we first examine the normal cervix. When we look at the lining of the normal cervix under a microscope we see layers of cells. The normal distribution is that the bottom layer is made of round young cells. As the cells mature they rise to the surface and flatten out, so that on the surface the cells are flat.
In cervical dysplasia there is a lack of this organized growth process. In mild dysplasia (CIN I) only a few cells are abnormal, while in moderate dysplasia (CIN II) the abnormal cells involve about one-half of the thickness of the surface lining of the cervix.
Cervical cells removes part of the cervix so the tissue can be examined under a microscope. The amount of cervical tissue removed depends on the method used:
A simple cervical biopsy removes a small piece of tissue from the surface of the cervix.
An endocervical biopsy (endocervical curettage) removes tissue from high in the cervix by scraping with a scoop-shaped instrument (curette).
A cervical biopsy can be done in your doctor's office, a clinic, or a hospital as an outpatient procedure.
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Thursday, February 23, 2012

How to get Ni-Mn-Co powder catalyst for synthetic diamond?

Ni-Mn-Co powder catalyst for synthetic diamond is at different stage of the synthesis:
spherical Morphology,even chemical composition and fine microstructure are eneficial to nucleation and growth of diamond;
Fit for the synthesis of diamond not only of fine particles abrasive grade,but also of coarse particles high grade,which is advantageous to the synthesis of diamonds with different variety and grades;
The fracture of the diamond with different diamond grain sizes and the interface where the diamond is crystallized were analyzed through SEM and AES, respectively;
In the synthesis system, the carbon can diffuse in three directions, which is helpful for diamond to be crystallized symmetrically and to increase the integration of the crystal;
Production cost greatly reduces while yield per cavity increases nearly 30%,electrical current density during synthesis drops 20% resulting in the reduction of consumption of hard alloy head hammer,and saving nearly 30% of metal catalyst;
The results for Ni-Mn-Co powder catalyst for synthetic diamond indicate that the NiMnCo powder catalyst is of wide application range, not only being used to synthesize coarse size and high strength diamond, but also being used to synthesize fine size diamond for grind materials.
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Wednesday, February 22, 2012

Where to buy CREBBP bromodomain?

Description of CREBBP bromodomain
2442 amino acids; 265351 Da; predict PI=8.83; Known domains are: KIX= CREB binding , Bromo= Bromodomain, Zn=zinc-finger (corresponding to cysteine-histidine rich regions), HAT= acetyl transferasic, Q= poly Glutaminic stretch. From the carboxy to the N-terminus: Q-Zn-HAT-Zn-Bromo-KIX-Zn. Reported isoform b (2402 aa) lacking aa406-444 (exon 5). Methylation of the KIX domain by CARM1 blocks association with CREB.
Function of CREBBP bromodomain
Binds specifically to phosphorylated CREB and enhances its transcriptional activity toward cAMP-responsive genes;
Acts as transcription co-activator by: i) enabling the interaction between different TF and RNAPolII complexes, ii) serving as molecular scaffold that brings enzymes to the promoter, iii) remodelling the chromatin favouring the open status, by histone and non-histone proteins acetylation.
Essential role in embryogenesis, cell differentiation, apoptosis, and proliferation;
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Where to buy Phospors for Ozalid Print Lamps?

Phospors for Ozalid Print Lamps
Appearence:white powder
Description:It can be used in diazo copy lamps and screen print lamps.
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What is the Atypical Cervical Cells

Just about the most important advantages for making program visits for the gynecologist is undertake a Pap smear to be able to screen regarding cervical cancer malignancy. During this kind of easy analyze, which is completed during any pelvic assessment, the surface with the cervix will be gently scraped, as well as the cervical tissues are then viewed under any microscope for proof any changes which could indicate cancer malignancy or precancerous tissues. Sometimes, something since simple since inflammation from your yeast contamination or some other vaginal infection will make the cervix tissues appear unusual (atypical). If this is the case, the problem can become treated, and then a Pap smear needs to be repeated to ensure that the atypical tissues have long gone away.
Nonetheless, sometimes atypical tissues are defined as precancerous tissues. The pathologist which reads the particular Pap smear talks about the tissues and determines exactly how abnormal they will look and also assigns a certain diagnosis. The Pap smear sample are often tested to find out if the particular cervix tissues show proof the reputation of individual papilloma trojan (HPV). HPV can be a sexually carried virus this is the cause regarding cervical cancer malignancy (and some other gynecologic conditions for instance genital genital warts and vulvar cancer). When a great abnormal Pap smear shows proof HPV, the risk for your eventual advancement of cervical cancer is significantly higher than if you have no proof HPV contamination, so tips for management and also follow-up will change.
Depending about exactly what sort of atypical cells have emerged in the Pap smear, and on if you have proof HPV contamination, your medical doctor may advise further tests. This might add a colposcopy (an business office procedure that allows a close-up view with the cervix and also biopsy regarding abnormal-appearing areas).

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The new information of Urine cells

A NEW recently posted article inside Journal in the American Modern society Nephrology (JASN) implies that patients’ individual kidney cells might be gathered along with reprogrammed, so that in the longer term, fewer people with kidney disease would wish complicated, expensive processes that influence their quality lifestyle.

Sharon Ricardo, PhD, via Monash University or college in Clayton, Luxembourg and your ex colleagues needed cells via an individual’s kidney along with reprogrammed these people into progenitor cellular material, allowing your immature cells to any type the kidney. The crew inserted numerous key coding genes in the renal cellular material that built them competent at forming various other cells.

Throughout another analyze, Miguel Esteban, MD, PhD, in the Chinese Academy involving Sciences throughout Guangzhou, China along with his acquaintances found that will kidney cellular material collected through the patients’ urine can even be reprogrammed like this. The using urine cells is not hard to implement in a very clinical placing, and your urine cells might be frozen along with later thawed before these are reprogrammed.

If researchers can easily expand your reprogrammed cellular material, known while induced pluripotent base cells (iPSCs), and return the crooks to the affected individual, these IPSCs may possibly restore your kidneys’ health insurance and vitality. The breakthroughs can assist investigators to analyze the cause of kidney disease and screen brand-new drugs that is used to help remedy them.

Ian Rogers, PhD, from Install Sinai Infirmary in Toronto wrote in the accompanying editorial that this two reports “demonstrate your feasibility involving using kidney cells as being a source e iPSCs along with efficient generation of person iPSCs via urine signifies that cells might be collected without notice. ”.



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Tuesday, February 21, 2012

Are you buying Hepatitis b virus surface antigen(HBsAg) quantitative detection kit (immunofluorescence method)?


Hepatitis B virus (HBV) expresses three types of surface antigens, i.e. S-, M-, and L-protein. L-protein is composed of S-, Pre-S2, and Pre-S1 region. The deletion of Pre-S1 region forms M-protein, and further deletion of Pre-S2 region results in S-protein. Most of commercially available HBsAgs is composed of either S-protein alone or S- plus M-proteins. This product, HBsAg, L-protein contains all the three components in one protein.
Characteristics: This immunoassay kit allows for the in vitro quantitative determination of human HBsAg concentrations in serum, plasma and other biological fluids.
Application Notes    
Centrifuge vials before opening to collect contents. When mixing or reconstituting protein solutions, always avoid foaming. To avoid cross-contamination, change pipette tips between sample additions, and between reagent additions. Also, use separate reservoirs for each reagent. When using an automated plate washer, adding a 30 second soak period following the addition of wash buffer, and/or rotating the plate 180 degrees between wash steps may improve assay precision. To ensure accurate results, proper adhesion of plate sealers during incubation steps is necessary. Substrate Solution should remain colorless until added to the plate. Keep Substrate Solution protected from light. Substrate Solution should change from colorless to gradations of blue. 8 Stop Solution should be added to the plate in the same order as the Substrate Solution. The color developed in the wells will turn from blue to yellow upon addition of the Stop Solution. Wells that are green in color indicate that the Stop Solution has not mixed thoroughly with the Substrate Solution.
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What is Zirconium dioxide?

Zirconium dioxide (ZrO2), sometimes known as zirconia (not to be confused with zircon), is a white crystalline oxide of zirconium. Its most naturally occurring form, with a monoclinic crystalline structure, is the rare mineral baddeleyite. The high temperature cubic crystalline form is rarely found in nature as mineral tazheranite (Zr,Ti,Ca)O2 (and a doubtful mineral arkelite). This form, also called cubic zirconia, is synthesized in various colours for use as a gemstone and a diamond simulant.
Zirconium dioxide is used as a refractory material, in insulation, abrasives, enamels and ceramic glazes. Stabilized zirconia is used in oxygen sensors and fuel cell membranes because it has the ability to allow oxygen ions to move freely through the crystal structure at high temperatures. This high ionic conductivity (and a low electronic conductivity) makes it one of the most useful electroceramics.
Zirconium dioxide can occur as a white powder which possesses both acidic and basic properties. On account of its infusibility and brilliant luminosity when incandescent, it was used as an ingredient of sticks for limelight.
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Monday, February 20, 2012

What is ATAD2 bromodomain?

Description
ATAD2 belongs to the family of AAA+ proteins, which are involved in a number of cellular processes ranging from protein degradation and DNA replication to membrane fusion and the movement of microtubule motors. AAA family proteins thereby often perform chaperone-like functions that assist in the assembly, operation, or disassembly of protein complexes. The hallmark of AAA (ATPases Associated with diverse cellular Activities) proteins is a 200-250 amino –acid ATP-binding domain. Human ATAD2 consists of two AAA+ domains and 1 Bromo domain.
ATAD2 is a member of the AAA ATPase family. Contains a bromodomain, a domain known to interact specifically with acetylated lysine. Two alternatively spliced isoforms of the human protein have been reported. Note: This description may include information from UniProtKB.
Protein type: EC 3.6.1.3; Hydrolase
Cellular Component: nucleolus; nucleus
Molecular Function: hydrolase activity; ATPase activity; nucleotide binding; ATP binding
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Where to buy Phosphors for CCFL?

Phosphors for CCFL are yet another embodiment of the power of the C-Mat Synthesis materials research discovery engine. These phosphors provide many of the same benefits of LED phosphors to cold cathode fluorescent lights, including sustained high brightness throughout a long life time. The materials are stable to moisture and temperature fluctuations, which make the phosphor materials ideal for applications in backlighting for LCD monitors, TVs, and other display devices. For a complete list of CCFL phosphor products available, please see the chart below.
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Where to buy 6-phosphate glucose dehydrogenase (G6PD) deficiency ELISA kit?

Synonyms
G6PD, g6pd, G6pd, Dsim\G6pd, Dsim\G6pdh, G-6PD, dsim_GLEANR_8868, Dsim\GD24877, GD24877, Zw, G6PD1, G6pdx, G-6-PD, G-6-pdh, G6-pd, G6PDH, DmelCG12529, CG12529, g6pdh, MGC69058, g6pd2, fj78b06, wu:fj78b06, si:dkey-90a13.8
Description
6-phosphate glucose dehydrogenase (G6PD) deficiency is an X-linked recessive hereditary disease characterised by abnormally low levels of glucose-6-phosphate dehydrogenase (abbreviated G6PD or G6PDH), a metabolic enzyme involved in the pentose phosphate pathway, especially important in red blood cell metabolism. Individuals with the disease may exhibit nonimmune hemolytic anemia in response to a number of causes, most commonly infection or exposure to certain medications or chemicals. G6PD deficiency is closely linked to favism, a disorder characterized by a hemolytic reaction to consumption of broad beans, with a name derived from the Italian name of the broad bean (fava). The name favism is sometimes used to refer to the enzyme deficiency as a whole, although this is misleading as not all people with G6PD deficiency will manifest a physically observable reaction to consumption of broad beans. G6PD deficiency is the most common human enzyme defect.
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Sunday, February 19, 2012

Where to get Tin Powder?


Tin Powder is a chemical element with the symbol Sn (for Latin: stannum) and atomic number 50. It is a main group metal in group 14 of the periodic table. Tin shows chemical similarity to both neighboring group 14 elements, germanium and lead and has two possible oxidation states, +2 and the slightly more stable +4. Tin is the 49th most abundant element and has, with 10 stable isotopes, the largest number of stable isotopes in the periodic table. Tin is obtained chiefly from the mineral cassiterite, where it occurs as tin dioxide, SnO2.
Tin Powder is a malleable, ductile and highly crystalline silvery-white metal. When a bar of tin is bent, a crackling sound known as the tin cry can be heard due to the twinning of the crystals. Tin melts at a low temperature of about 232 °C, which is further reduced to 177.3 °C for 11-nm particles.
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Saturday, February 18, 2012

What is Sputum Cells?

Description of Sputum Cells
Proper collection of sputum is the key to increasing of the detection rate of early-stage lung cancer.
1.The doctor hands over sputum specimens bottle containing 20ml of cells preservation solution to the client;
2.The client should gargle with water before expectoration to clean the oral cavity; take a deep breath to try to expectorate sputum in the deep part of lungs into the specimen bottle; 1-2 mouths of sputum, which is about 5-0 ml is needed; tighten the cap of the bottle, and then shake it gently for a few times, to ensure the full contact between the specimens and the preservation solution.
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Thursday, February 16, 2012

How to buy Ni-Mn-Co powder catalyst for synthetic diamond?

Ni-Mn-Co powder catalyst for synthetic diamond is at different stage of the synthesis:
1.spherical Morphology,even chemical composition and fine microstructure are eneficial to nucleation and growth of diamond;
2.Fit for the synthesis of diamond not only of fine particles abrasive grade,but also of coarse particles high grade,which is advantageous to the synthesis of diamonds with different variety and grades;
3.The fracture of the diamond with different diamond grain sizes and the interface where the diamond is crystallized were analyzed through SEM and AES, respectively;
4.In the synthesis system, the carbon can diffuse in three directions, which is helpful for diamond to be crystallized symmetrically and to increase the integration of the crystal;
5.Production cost greatly reduces while yield per cavity increases nearly 30%,electrical current density during synthesis drops 20% resulting in the reduction of consumption of hard alloy head hammer,and saving nearly 30% of metal catalyst;
The results indicate that the NiMnCo powder catalyst is of wide application range, not only being used to synthesize coarse size and high strength diamond, but also being used to synthesize fine size diamond for grind materials.
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What is 11Beta-HSD1?

11Beta-HSD1 inhibitors appear to be attractive R&D products for the treatment of type 2 diabetes, because a large number of major biotechnology and pharmaceutical companies are involved in their development, and this pipeline, although very young, already has 70% of products in clinical stage of development., according to a new report, titled Diabetes R&D Pipeline: 11beta-HSD1 inhibitors, added to the offering of Research and Markets.
11Beta-HSD1 (11beta-hydroxysteroid dehydrogenase type 1) antagonists are insulin sensitizers. 11beta-HSD1 is an enzyme that converts inactive cortisone into potent, biologically active hormone, cortisol. This conversion occurs within cells of key metabolic tissues including liver, adipose tissue, muscle tissue, and pancreas. Cortisol elevates blood glucose levels by increasing glucose production in liver, and by inhibiting uptake and disposal of glucose in muscle and adipose tissues.
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Wednesday, February 15, 2012

Where to get Superfine copper powder?

Applications of Superfine copper powder:
Efficient catalysts: The large and highly active surface area, super fine copper has a greatly enhancement catalytic efficiency. Instead of conventional copper can be used for methanol industry.
Conductive paste: Electronic paste is widely used in microelectronics industry packaging, connectivity, miniaturization of microelectronic devices. super fine copper electronic paste has superior performance. It is widely used in MLCC.
Sintering additives:In the powder metallurgical industry, super fine copper powder can be used as sintering additive to reduce sintering temperature in ceramic and diamond tools production.
Medicine and anti bacteria: super fine copper powder can be used widely in medical industry and to anti bacteria.
Lubricant addictive: super fine copper powder can be dispersed into lubricant to decrease the surface friction and repair micro defect of the friction surface.
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Where to buy Neo-TSH Quantitative determination kit (TRIFA)?

Phenylketonuria, called PKU for short, is an inherited disorder that is characterized by inability of the body to utilize the essential amino acid, phenylalanine. Unless the condition is detected and treatment is initiated soon after birth, this hereditary biochemical abnormality, prevents normal brain development and usually results in mental retardation
The PKU-Neo kit is specially designed to be used in phenylalanine assay on the dry blood spot (DBS) collected from newborn's heel during the first 48 hours of birth.
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Tuesday, February 14, 2012

Are you looking for Osmium Tetroxide?

Osmium Tetroxide (also called osmium tetraoxide) is the chemical compound with the formula OsO4. The compound is noteworthy for its many uses, despite the rarity of osmium. It also has a number of interesting properties, one being that the solid is volatile.
properties
Osmium Tetroxide exists as a pale yellow-brown crystalline solid  with a characteristic acrid chlorine-like odor. The element name osmium is derived from osme, Greek for odor. OsO4 is volatile: it sublimes at room temperature. It is soluble in a wide range of organic solvents, and moderately soluble in water, with which it reacts reversibly to form osmic acid (see below). Pure osmium tetroxide is probably colourless and it has been suggested that its yellow hue is due to Osmium Tetroxide (OsO2) impurities although osmium dioxide normally exists as a black powder. Osmium tetroxide molecule is tetrahedral and therefore non-polar. This nonpolarity helps OsO4 penetrate charged cell membranes. OsO4 is 518 times more soluble in CCl4 than in water.
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PROPERTIES of Water Atomized Copper Powder with low apparent density

PROPERTIES of Water Atomized Copper Powder with low apparent density
Light rosy irregular similar to spherical powder.
APPLICATION
Diamond Tools, P/M Parts, chemical catalyst, carbon brushes, friction materials, spraying materials, and welding electrodes.
PACKING AND STORAGE
Iron barrel with plastic bag lining.
Carefully keep away from moist and damp. Store in dry and ventilating place.
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Monday, February 13, 2012

Where to get GSG2 + K00084?

GSG2 + K00084
Haspin (haploid germ cell–specific nuclear protein kinase) is a serine/threonine kinase that tightly associates with chromosomes during mitosis. Haspin-like proteins are identified in several major eukaryotic phyla including yeasts, plants, flies, fish, and mammals. Kinases of this family share only very low sequence homology with other protein kinases, contain several large insertions and lack a subset of residues that are almost invariant in known kinases. Phosphorylation of Haspin itself and its specific substrate histone H3 threonine-3 (H3T3ph) occurs during mitosis. Haspin has been shown to be vital for the maintenance of chromosome cohesion. Depletion of Haspin leads to a loss of cohesin association, premature chromatid separation, activation of the spindle assembly checkpoint, and a block in mitosis in a pro-metaphase-like state. Although no direct link to cancer has been established so far, Haspin has been suggested as a target for drug development as it has been shown to activate the well established oncology target Aurora 2.
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Sunday, February 12, 2012

Where to get Water Atomized Copper Powder with low apparent density?




Water Atomized Copper Powder with low apparent density is a kind of water spray powder reduction than copper powder preparation low loose the method. The existing oxidation reduction method of directly, copper powder for reduction time long, the higher temperature of furnace temperature, can the big use of goods and services, costs are hush drunker; Labor intensity, low efficiency of working procedure, the high cost of transport; Cannot be used in the production of high carrying into action of gunpowder metallurgy intersections.
The confront invention water spray powder reduction than copper powder preparation low loose the method, which is characteristic of the USES annular flow injection of copper focus more fluid atomization, then directly after the atomization of copper pulverisation into prohibitionist pulverise air-dry, the reduction of sintering, crushing, screening processing, get fine particles of the rules is not reunification by copper color pulverise. It can be used inwards Diamond Tools,powder metallurgy parts,Chemical catalyst,carbon paper skirmishes and rubbing stuffs and welding electrodes.
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How to buy Hepatitis c virus(HCV) nucleic acid test kit (PCR-fluorescence probe method)?

Hepatitis c virus (HCV) is a small (55–65 nm in size), enveloped, positive-sense single-stranded RNA virus of the family Flaviviridae. Hepatitis C virus is the cause of hepatitis C in humans.
Hepatitis c virus particle consists of a core of genetic material (RNA), surrounded by an icosahedral protective shell of protein, and further encased in a lipid (fatty) envelope of cellular origin. Two viral envelope glycoproteins, E1 and E2, are embedded in the lipid envelope.
Hepatitis c virus has a positive sense single-stranded RNA genome. The genome consists of a single open reading frame that is 9600 nucleotide bases long. This single open reading frame is translated to produce a single protein product, which is then further processed to produce smaller active proteins.
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Thursday, February 9, 2012

Where to get Quantitative high-risk HPV DNA detection kit?

Features of Quantitative high-risk HPV DNA detection kit:
1. Quick test: a high-risk HPV subtypes detected 8 (16,18,31,33,45,52,56,58), associated with cervical cancer in Chinese population at high risk of type coverage of more than 95%.
2. Simple: Closed operation, carried out in a closed reaction system PCR, monitoring by detecting changes in fluorescence intensity response to the whole process, the end of reaction to analyze the results.
3. Quantitative results: accurate assessment of viral load samples.
4. High sensitivity and specificity: clinical validation, sensitivity and specificity of up to 95% or more.
5. The results of objective, reliable, no human judge, the instrument collection and analysis of experimental data.
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What is Caesium bromide?

Caesium bromide, (CsBr), is an ionic compound of caesium and bromine. It has simple cubic p-type cubic crystallic structure, comparable to that of caesium chloride type with space group Pm3m and lattice constant a = 0.42953 nm. Distance between Cs and Br atoms is 0.37198 nm.
Uses
Caesium bromide is sometimes used in optics as a beamsplitter component in wide-band spectrophotometers.
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Wednesday, February 8, 2012

What is Abl2+ K00546?

Abl2(also known as ARG (ABL Related Gene)) is a member of the Abelson family of non-receptor tyrosine kinase. ABL2 shares a high degree of sequence conservation with cABL and has similar domain organization comprising an N-terminal SH3–SH2 kinase domain unit followed by a C-terminal domain containing docking sites for SH3 domains, F-actin and microtubules. Through its interactions with the cytoskeleton Abl2 plays a role in murine neurulation and it is required for adhesion-dependent neurite branching and synapse/dendrite stability. ABL2 has also a role in fibroblastic- and epithelial cell adhesion and migration. ABL2 shares a number of cellular regulatory functions with cABL. Targeted disruption of the cAbl gene in mice resulted in pleiotropic phenotypes including runtedness, high perinatal lethality, susceptibility to infections, and immune deficiencies.
Like ABL1, Abl2 is involved in human neoplastic diseases. Abl is up- or down-regulated in several solid tumors and oncogenic gene translocations involving the ETV6 gene have been described in human acute leukemia. Previously we have describe the structure of the kinase domain of ABL2 at 2.05 ? resolution in complex with the oncology drug gleevec.
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Where to get Osmium Tetroxide?

Osmium Tetroxide is also called osmium tetraoxide. It is the chemical compound with the formula OsO4.
The osmium of OsO4 has a formal oxidation state of +8, the highest oxidation state known for a transition metal. The osmium atom has eight valence electrons. The high oxidation state of osmium in this compound can be rationalized by comparison of main-group and transition-metal chemistry.
Application: Organic synthesis, Biological staining, Polymer staining, Osmium ore refining, Buckminsterfullerene adduct,
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Uses of Sodium iodide

Sodium iodide is a white, crystalline salt with chemical formula NaI used in radiation detection, treatment of iodine deficiency, and as a reactant in the Finkelstein reaction.
Uses
Sodium iodide is commonly used to treat and prevent iodine deficiency.
Sodium iodide is used in polymerase chain reactions, and also (as an acetone solution) in the Finkelstein reaction, for conversion of an alkyl chloride into an alkyl iodide.
Sodium iodide activated with thallium, NaI(Tl), when subjected to ionizing radiation, emits photons and is used in scintillation detectors, traditionally in nuclear medicine, geophysics, nuclear physics, and environmental measurements
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Monday, February 6, 2012

What Chloroplatinic Acid is Used for

Chloroplatinic acid or hexachloroplatinic acid is the chemical combine typically chanced as the hexahydrate. This is one of the most readily available soluble compounds of platinum. It is rarely obtained in the pure state. The commercial product is the oxonium salt of the hexachloroplatinate(IV) anion. It is an acid, H2PtCl6, derived from platinic chloride and hydrochloric acid, used in the analysis of amines. Cyanosis is possible. Chronic exposure may result in pulmonary fibrosis.  Swallowing will lead to a strong corrosive effect on mouth and throat and to the danger of perforation of esophagus and stomach.
Chloroplatinic acid was popularized for the decision of potassium.
The potassium comprises selectively precipitated as potassium chloroplatinate. Determinations were done in 85% (v/v) alcohol solutions with excess platinate ions, and the precipitated product was weighed. Potassium could be noticed for solutions as cut equally incognizant.02 to 0.2% (m/v).
Therefore, the correct formula equals [H3O]2[PtCl6]·4H2O. The related to palladium compound, [H3O]2[PdCl6] is extremely unstable and has not been insulated incoming pure form.
Chloroplatinic acid is produced by dissolving platinum argentiferous sponge in greenish blue regia. This reaction is rumored to produce nitrogen-containing platinum compounds, but the product is H2PtCl6.
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The Effection of Electrolytic copper powder

Electrolytic copper powder embodies a pulverization is specified while a finely divided solid, smaller than 1000 µm in its maximum dimension. A particle is defined as the smallest unit of a powder. The particles of many metal powders are 25 to 200 µm in size.
Electrolytic copper powder is produced by following principles habituated in electroplating with the conditions changed to produce a loose powdery deposit instead than a smooth out adherently upstanding layer. The copper powderize incurred approach electrolysis follows very important person purity stuff, averaging more than 99% copper. Powder metallurgy is the study of the processing of metal powders, including the fabrication, characterization, and conversion of metal powders into useful engineering components. The three main steps in the scheme of powder metallurgy are illustrated in Figure 1.
Powders exhibit behavior that is intermediate between that of a solid and a liquid. Powders will flow under gravity to fill containers or die cavities, so in this sense they behave like liquids. They are compressible like a gas. But the compaction of a antimonial powder equals basically irreversible, corresponding the impressionable deformation of a metal.
The coverings of metal powderizes are quite sweeping. Besides their use in powder metallurgy (resulting in products such as: dental restorations, oil-less bearings, automotive transmission gears, armor piercing projectiles, electrical contacts, nuclear power fuel elements, orthopedic implants, business machine parts, high-temperature filters, aircraft brake pads, etc.), they are used in such products as paint pigments, explosives, rocket fuels, printing inks, catalysts, and many a others. Thus, a aluminous pulverization is easily shaped, with the desirable behavior of a solid after processing.

Thursday, February 2, 2012

How to Use Scandium iodide Correctly

Scandium iodide can be added to mercury vapor lamps so that they will emit light that closely resembles sunlight.
Only Scandium iodide (or if you want scandium triiodide), ScI3.
Scandium is present in most of the deposits of rare earth and uranium compounds, but it costs expressed from these ores in only a few mines worldwide. Because of the low availability and the difficulties in the preparation of metallic scandium, which was first base neutralized 1937, it took until the 1970s before applications for scandium were formulated. The incontrovertible effectuates of scandium on aluminium alloys were discovered in the 1970s, and its use in such alloys persists they're lone major application. The pure element is relatively stable in air in bulk form, due to passivation resulting from the formation of a protective oxide (Y2O3) film on its surface. This film can reach a thickness of 10 µm when yttrium is heated to 750 °C in water vapor. When finely divided, however, yttrium is very unstable in air; shavings or turnings of the metal can ignite in air at temperatures exceeding 400 °C.
The properties of scandium compounds are intermediate between those of aluminium and yttrium. A diagonal relationship exists between the behavior of magnesium and scandium, just as there is between beryllium and aluminium. In the chemical compounds of the elements shown as group 3, above, the predominant oxidation state is +3.
Yttrium is the first d-block element in the fifth period.
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Wednesday, February 1, 2012

The New Information about Yttrium Metal

Yttrium is a chemical element. It is any of a subgroup of rare-earth elements, of which the cerium and terbium metals comprise the other two subgroups. It constitutes a silvery-metallic transition aluminous chemically like to the lanthanoids and has historically been classified as a infrequent land element.
Yttrium is the first d-block element in the fifth period. The most important use of yttrium is in making phosphors, such as the red ones used in television receiver cathode irradiate subway showings and inwards LEDs.
Chemically, yttrium resembles these elements more closely than its neighbor in the periodic table, scandium, and if its physical properties were plotted against atomic number then it would have an apparent number of 64.5 to 67.5, placing it between the lanthanides gadolinium and erbium.
Other uses include the production of electrodes, electrolytes, electronic filters, lasers and superconductors; various medical applications; and as traces stylish various materials to enhance their properties.
Yttrium is a soft, silver-metallic, lustrous and highly crystalline transition metal in group 3.
As expected by periodic trends, it is less electronegative than its predecessor in the group, scandium, more electronegative than its successor in the group, lanthanum, and less electronegative than the next member of period 5, zirconium.
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The Functions of Strontium Iodide

Strontium iodide yellows when exposed to air travel. Consummate Strontium embodies preferably gentle and malleable, and a freshly exposed surface has a pinkish or peachy color. It is used as a thermal conductor, an electrical conductor, a construction stuff, and a constituent of various metal alloys.
In one embodiment, a fabric contains a vitreous silica incorporating strontium iodide providing at least 50,000 photons per MeV. A scintillator radiation detector according to another embodiment includes a scintillator optic comprising europium-doped strontium iodide furnishing at least 50,000 photons per MeV. A scintillator radiation detector in yet another embodiment includes a scintillator optic comprising SrI2 and BaI2, wherein a ratio of SrI2 to BaI2 is in a range of between 0:1 A method for manufacturing a crystal suitable for use in a scintillator includes mixing strontium iodide-containing crystals with a source of Eu2+, heating the mixture above a melting point of the strontium iodide-containing crystals, and temperature reduction the ignited mix close the germ lechatelierite for growing a crystal.
Additional materials, systems, and methods are presented. At high temperatures (when in the presence of air) strontium iodide completely decomposes to form strontium oxide and free iodine.
These applications have continued to require scintillators with greater energy resolution, higher light yield, fast scintillation decay time, and higher effective atomic number. Ease of crystallization and robustness of the crystals during use are also all important belongingses. Sodium iodide (NaI) scintillators consume embodied exploited most widely in all applications due to its ease of growth. Bismuth germanate (BGO) is used in medical imaging coatings (deary scanners) because of thems heights Z number and density, although both have poor energy resolution and light give way.
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