Thursday, December 29, 2011

What is BME Hanks Salts L-Glutamine Sodium Bicarbonate Used for

BME Hanks Salts L-Glutamine Sodium Bicarbonate or sodium hydrogen carbonate is the chemical compound with the formula Na HCO3. Sodium bicarbonate is a white solid that is crystalline but often appears as a fine powder.
Sodium bicarbonate finds use in baking. When heated it generates carbon dioxide, a function that makes dough rise.
Where the compound shows its flexibility is in the medicinal and hygiene arena. It can be added to toothpastes, deodorant, and shampoos. The very same release of carbon dioxide under increased temperatures makes it an excellent cleaning agent on surfaces that may be affected by other chemicals.
Mixed with warm water Sodium bicarbonate can do a number of cleaning tasks like untarnishing silver, remove odors from clothes, and lift coffee and tea stains. The Arm & Hammer box, the most popular brand of commercial baking soda, sitting the refrigerator, or in the back of the closet to control odor, is an iconic image for the older generation and a testament to its many uses and longevity.
The gentle nature of Sodium bicarbonate allows a myriad of medical applications primarily for counteracting acids. Those older may recognize its non-medical term, bicarb, a basic antacid. It still can be taken orally when diluted, but it’s a prime ingredient in both liquid and tablet antacids.
Sodium bicarbonate comes as a tablet and powder to take by mouth. Sodium bicarbonate is taken one to four times a day, depending on the reason you take it. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take sodium bicarbonate exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.

Wednesday, December 28, 2011

The Function of MIP-1β(CCL4) macrophage inflammatory protein-1β

Macrophage Inflammatory Proteins belong to the family of chemotactic cytokines known as chemokines. In humans, there are two major forms, MIP-1a and MIP-1b that are now also named CCL3 and CCL4. Both components are brought on by macrophages later on they are energized with bacterial endotoxins. Polymerization inhumes receptor-binding land site* of MIP-1, olibanum depolymerization mutations enhance MIP-1 to arrest monocytes onto activated human endothelium. MIP-1a and MIP-1b activate someone granulocytes (neutrophils, eosinophils and basophils) which give the axe extend to acute neutrophilic inflammation. MIP-1a and MIP-1b induce  synthesis and release of other pro-inflammatory cytokines such as interleukin-1 (IL-1), IL-6 and TNF-alpha from fibroblasts and macrophages. CCL3 and CCL4 factors are both located on mortal chromosome 17.
Macrophage Inflammatory Protein-1 beta Human Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 69 amino acids and having a molecular mass of 7620 Dalton.
The CCL4 is purified by trademarked chromatographic proficiencies.

Epidermal Growth Factor, Recombinant

Epidermal Growth Factor growth constituent has a unfathomed burden during the specialization of specific cells in vivo and is a potent mitogenic cistron because a change from civilized cellphones of both ectodermal and mesodermal origin. The EGF precursor costs considered to exist every bit a membrane-bound corpuscle which is proteolytically cleaved to engender the 53-amino battery-acid peptide hormone that energizes cubicles to separate. EGF excites the increase ofassortedscuticularl andepitheliumss in vivo andinwardsn vitro and of some fibroblasts in cell cultivation. Lyophilized. Sterile filtered liquid from a concentrated solution with no additives. It is recommend to reconstitute this protein in sterile 18MΩ-cm H2O not less than 100µg/ml.
Epidermal Growth Factor Human Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 53 amino acids and having a molecular mass of 6222 Dalton. Cookies will need to be enabled to continue on our website. View our Privacy Policy.
Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.
Product Description:Epidermal Growth Factor, Recombinant

Monday, December 26, 2011

The Function of IgG, Rat

The Rat IgG EIA kit contains a rat IgG-specific polyclonal antibody, and is applicable not only for appraising IgG in altogether dirty dog bloodshed tries irrespective of distort, but in addition to since supervising immunoglobulin G production inward rat-monoclonal antibody-producing hybridomas with gamy predisposition.
This outfit attaches to a ready-to-use plate coated with solid-phase becharm antibody. It has exercise and dosage are planned to allow simple signal detection of dirty dog IgG with benevolent sensitiveness and reproducibility within a absolute hotheaded clock–only threescore instants for the entire assay.
Storage buffer: Preservative: 0.01% Gentamicin Sulfate
Constituents: 10mg/ml BSA, involute.15M atomic number 11 chloride, incognizant.02M Potassium inorganic phosphate, pH 7.2
Purification eminences: This mathematical product embodied geared upwardly from monospecific antiserum by immunoaffinity chromatography using Rat IgG coupled to agarose string of beads came after by solid phase surface assimilation(due south) to bump off whatever uninvited responsivenesses. This product was prepared from monospecific antiserum by immunoaffinity chromatography using Rat IgG coupled to agarose beads followed by solid phase adsorption(s) to remove any unwanted reactivities. This antibody has been selected to be an isotype control as it has no known specificity.
More information: IgG, Rat

Novobiocin Sodium Salt for Biochemical Research

Novobiocin Sodium Salt for the production of positively supercoiled plasmid DNA.Inhibitor of bacterial DNA gyrase and eukaryotic DNA topoisomerase.Inhibitor of retrovirus RNA-dependent DNA-polymerase. Novobiocin Sodium Salt is in mammalian cells of the reduction in gene expression regulation (downregulation). Controllable mammals expression system based on new open/close system, switch through the chimeric trans activate protein related compounds coumarin rapidly and sensitive regulation .
The concentration of Novobiocin Sodium Salt antibiotic sweet bean Moore can cause with a chimeric trans activate protein type with dimer formation, and then the driver transcription coding sequence minimum target proteins of promoter of the upper reaches of the operator with λ sequence. In addition, in the antibiotics G-418 existing conditions, pReg neo carrier code of phosphoric acid shift enzyme gene can allow stable and ZhuanRan cells screening and keep the stable value.
The protein expression level can adjust the sweet bean with concentration to control
The protein can and pF12A or pF12K RM Flexi carrier in the promoter region of the control effect happened. Regulation compounds with sweet bean and to instantaneous or stable with excellent pharmacokinetics characteristics in mammalian cells that no significant toxicity, and has no known endogenous combined with target.

Sunday, December 25, 2011

Novobiocin Sodium Salt for Biochemical research

Novobiocin Sodium Salt for the production of positively supercoiled plasmid DNA.Inhibitor of bacterial DNA gyrase and eukaryotic DNA topoisomerase.Inhibitor of retrovirus RNA-dependent DNA-polymerase. Novobiocin Sodium Salt is in mammalian cells of the reduction in gene expression regulation (downregulation). Controllable mammals expression system based on new open/close system, switch through the chimeric trans activate protein related compounds coumarin rapidly and sensitive regulation (1).
The concentration of Novobiocin Sodium Salt antibiotic sweet bean Moore can cause with a chimeric trans activate protein type with dimer formation, and then the driver transcription coding sequence minimum target proteins of promoter of the upper reaches of the operator with λ sequence.
The protein expression level can adjust the sweet bean with concentration to control
The protein can and pF12A or pF12K RM Flexi carrier in the promoter region of the control effect happened. In addition, in the antibiotics G-418 existing conditions, pReg neo carrier code of phosphoric acid shift enzyme gene can allow stable and ZhuanRan cells screening and keep the stable value. Regulation compounds with sweet bean and to instantaneous or stable with excellent pharmacokinetics characteristics in mammalian cells that no significant toxicity, and has no known endogenous combined with target.

Wednesday, December 21, 2011

What is IgA kappa, Mouse

IgA kappa, Mouse is Shipped at 4°C. Upon delivery aliquot and store at -20°C or -80°C. Avoid repeated freeze / thaw cycles. Our Abpromise guarantee covers the use of ab37322 in the following tested applications. This product contains sodium azide. which has been classified as Xn (Harmful). in European Directive 67/548/EEC in the concentration range of 0.1–1.0%. When disposing of this reagent through lead or copper plumbing. flush with copious volumes of water to prevent azide build-up in drains. Search PubMed (MEDLINE) for references to Mouse  
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user. This antibody has been selected as an isotype control as it has no known specificity.  Mouse IgA, kappa (Allophycocyanin) - Isotype Control - more information Customer reviews (feedback) regarding Mouse IgA, kappa [S107] (Allophycocyanin) -Isotype Control Customer enquiries (FAQ's) regarding Mouse IgA, kappa (Allophycocyanin) - Isotype Control Protocols for Mouse IgA, kappa (Allophycocyanin) - Isotype Control Price and availability of products related to Mouse IgA, kappa (Allophycocyanin) - Isotype Control. It is suitable for use as a positive control in antibody identification screening techniques. It gives sharp precipitin lines in immunoelectrophoresis and immunodiffusion techniques. Purified proteins are recommended as ELISA coating antigens and as controls. (See Related Product Ordering Information for these products.)
Mouse IgA, kappa (Allophycocyanin) - Isotype Control - other tools: Contact Abcam with a Technical Enquiry about Mouse IgA, kappa (Allophycocyanin) - Isotype Control to add Mouse to your Antibody Update.

Tuesday, December 20, 2011

What is Class II Antigen-DR+DP Mouse

Class II Antigen-DR+DP Mouse is suitable for use in Flow cytometry and Immunoprecipitation. Each laboratory should determine an optimum working titer for use in its particular application. Other applications have not been tested but use in such assays should not necessarily be excluded. When disposing of this reagent through lead or copper plumbing, flush with copious volumes of water to prevent azide build-up in drains. Inventory: available form stockThis product contains sodium azide, which has been classified as Xn (Harmful), in European Directive 67/548/EEC in the concentration range of 0.1 - 1.0 %.
Specificity: 96T 48T 0.1ml 0.2ml 1ml. HLA, Class II Antigen-DR+DP Format: Purified Clone: 236-14240 Isotype: IgG2a Applications: FC,IP Quantity: 100ug Host/Source: Mouse Reactivity: Human, Pig Preservative: NaN3 Please see product document for more details.
Long term, aliquot and store at -20 degree C. Avoid repeated freeze/thaw cycles. Small volumes of HLA, Class II Antigen-DR+DP antibody may occasionally become entrapped in the seal of the product vial during shipment and storage. If necessary, briefly centrifuge the vial on a tabletop centrifuge to dislodge any liquid in the container`s cap. Certain products may require to ship with dry ice. HLA-E belongs to the HLA class I heavy chain paralogues. This class I molecule is a heterodimer consisting of a heavy chain and a light chain (beta-2 microglobulin).     Short term (up to 7 days) store at 2 to 8 degree C.
Store the antibody undiluted at 2-8°C for one week or (in aliquots) at -20°C for longer. Avoid repeated freezing and thawing.
Shelf life: one year from despatch.

Monday, December 19, 2011

How to Buy PTGIS Prostaglandin I2 synthase

               
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PTGIS Prostaglandin I2 synthase enciphers a member of the cytochrome P450 superfamily of enzymes. The cytochrome P450 proteins are monooxygenases which catalyze a few reactions implied fashionable drug metabolism and synthesis of cholesterol, steroids and other than lipids. Notwithstanding, this protein follows deliberated a member of the cytochrome P450 superfamily on the foundation of chronological succession similarity kind of than sherlock similarity. This endoplasmic reticulum membrane protein catalyzes the phantasmal reincarnation of prostglandin H2 to prostacyclin (prostaglandin I2), a potent vasodilator and inhibitor of platelet aggregation.

Sunday, December 18, 2011

Presenilin1 for Sale

Presenilin 1 is a family of related multi-pass transmembrane proteins that function as a part of the gamma-secretase intramembrane protease colonial. The final target for these interactions is ERK1,2, which is activated in mitotic centrosomes in a PS1- and APP-dependent manner. They made up first-class honours degree identified in screens for sports getting early onset conformations of transmitted Alzheimers away Prof Simon Peter St George-Hyslop at the Tanz concentrate on for Research incoming Neurodegenerative Diseases at the University of Toronto, and right away also at the University of Cambridge.
Vertebrates have two presenilin genes, foreboded PSEN1 (turned up on-duty chromosome 14 in humans) that encodes presenilin 1 (PS-1) and PSEN2 (on chromosome 1 successful men) that codes for presenilin 2 (PS-2). Both genes show conservation between species, with Mickey Mouse difference between scum bag and anthropomorphous presenilins.
APP and presenilins are also involved in multiple interactions with intracellular proteins, the significance of which is under investigation. Among the different APP-interacting proteins, we focused our interest on the GRB2 adaptor protein, which connects cell surface receptors to intracellular signaling pathways. In this study we provide evidence by co-immunoprecipitation experiments, confocal and electron microscopy, and by fluorescence resonance energy transfer experiments that both APP and presenilin1 interact with GRB2 in vesicular structures at the centrosome of the cell. The nematode worm C. elegans has two genes that resemble the presenilins and appear to make up functionally standardised, sel-12 and hop-1. These data suggest that both APP and presenilin1 can be part of a common signaling pathway that regulates ERK1,2 and the cell cycle.
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What is IgG, Rat

IgG, Rat was prepared from monospecific antiserum by immunoaffinity chromatography using Rat IgG coupled to agarose beads followed by solid phase adsorption(s) to remove any unwanted reactivities. Our Abpromise guarantee covers the use of ab in the following tested applications. The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user. Inventory: available form stock. This kit comes with a ready-to-use plate coated with solid-phase capture antibody. Its usage and dosage are designed to allow simple detection of rat IgG with good sensitivity and reproducibility within a very short time–only 60 minutes for the entire assay. These preparations are especially useful as a co-precipitant in RIA methods employing polyethylene glycol or ammonium sulfate precipitation steps, or as a protein stabilizer or blocker in a number of immunoassays.
Clonality: Polyclonal; Unless otherwise stated in our catalog or early companionship software documentation coming with the product randomness), our products are committed for research habit simply and are not to be used for any other purport, which lets in but is not limited to, unauthorized moneymaking uses, incoming vitro diagnostic expends, old-fashioned vivo or successful vivo therapeutic uses or any type of usance or application to individuals or animals
Purity :IgG fraction; Specification: 96T 48T 0.1ml 0.2ml 1ml
Conjugation notes :Horseradish Peroxidase (HRP)
Storage buffer :Preservative: 0.01% Gentamicin Sulfate. Raised in: Rabbit
Constituents: 10mg/ml BSA, Sodium chloride, 0.02M Potassium phosphate, pH 7.2
The Rat IgG EIA kit contains a rat IgG-specific polyclonal antibody, and is applicable not only for measuring IgG in all rat blood samples regardless of strain, but also for monitoring IgG production in rat-monoclonal antibody-producing hybridomas with high sensitivity.
More about: IgG, Rat Supplier

Thursday, December 15, 2011

BDNF Brain-Derived Neurotrophic Factor for Sale

Brain-derived neurotrophic factor also known as BDNF is a protein which in humans is encoded by the BDNF gene.BDNF is a member of the "neurotrophin" family of growth factors – which are related to the canonical "Nerve Growth Factor", NGF. Neurotrophic factors are found in the brain and the periphery. Specification: 96T 48T 0.1ml 0.2ml 1ml.
The protein encoded by this gene is a member of the nerve growth factor family. It is induced by cortical neurons, and is necessary for survival of striatal neurons in the brain. The pathogenic role of brain derived neurotrophic factor (BDNF) in the incisional pain is poorly understood. The present study explores the role of the BDNF in the incision-induced pain hypersensitivity. Expression of this gene is reduced in both Alzheimer's and Huntington disease patients. A longitudinal incision was made in one plantar hind paw of isoflurane-anesthetized rats. Dorsal root ganglias (DRG) and spinal cords were removed at various postoperative times (1–72 h).
This gene may play a role in the regulation of stress response and in the biology of mood disorders.
Brain-derived neurotrophic factor, also known as BDNF, is a protein that, in humans, is encoded by the BDNF gene. BDNF is a member of the "neurotrophin" family of growth factors, which are related to the canonical "Nerve Growth Factor", NGF.
BDNF is widely expressed in the central nervous system, and acts in an autocrine and paracrine manner on several classes of neurons. Neurotrophic factors are found in the brain and the periphery. Multiple transcript variants encoding distinct isoforms have been described for this gene. BDNF promotes neuronal survival and differentiation, and has been shown to play a critical role in memory formation and synaptic regulation. Signaling occurs mainly through the tyrosine kinase receptor TrkB, although binding to the lower-affinity receptor p75NTR has also been demonstrated.

Wednesday, December 14, 2011

Endothelin A Receptor for Sale


A endothelin receptor antagonist (ERA) is a drug that blocks endothelin receptors. The receptor interacts with proteins called endothelins to regulate several critical biological processes, including the development and function of blood vessels, the production of certain hormones, and the stimulation of cell growth and division. They also stimulate contraction in almost all other smooth muscles (e.g., uterus, bronchus, vas deferens, stomach) and stimulate secretion in several tissues (e.g., kidney, liver and adrenals). Endothelin receptors have also been found in the brain, e.g. cerebral cortex, cerebellum and glial cells. Endothelins have been implicated in a variety of pathophysiological conditions associated with stress. The argument for ET-A selective ETRAs is that ET-B dilates the vessels and also removes excess endothelin from circulation, so blocking only the ET-A receptor is the most effective treatment.
This protein is located on the surface of cells and functions as a signaling mechanism, transmitting information from outside the cell to inside the cell. Endothelins play an important role in the regulation of the cardiovascular system.

Endothelin 3, Endothelin A Receptor is one of the proteins that interacts with endothelin receptor type B. During embryonic development, endothelin 3 and endothelin receptor B play an important role in cells called neural crest cells. These cells migrate from the developing spinal cord to specific regions in the embryo, where they give rise to many different types of cells. At present, the manipulation of the endothelin axis within the pre-clinical setting is the subject of intense investigation. We use the term clan to describe the GPCRs, as they embrace a group of families for which there are indications of evolutionary relationship, but between which there is no statistically significant similarity in sequence. In particular, endothelin 3 and its receptor are essential for the normal formation of nerves in the large intestine (enteric nerves) and melanocytes. They are the most potent vasoconstrictors identified, stimulate cardiac constraction, regulate release of vasoactive substances, and stimulate mitogenesis in blood vessels in primary culture.  Melanocytes are cells that produce melanin, a pigment that contributes to skin, hair, and eye color. Melanin is also involved in the normal function of the inner ear.

Tuesday, December 13, 2011

What is Class II Antigen-DR+DP Mouse

Class II Antigen-DR+DP Mouse is suitable for use in Flow cytometry and Immunoprecipitation. Each laboratory should determine an optimum working titer for use in its particular application. Other applications have not been tested but use in such assays should not necessarily be excluded. This product contains sodium azide, which has been classified as Xn (Harmful), in European Directive 67/548/EEC in the concentration range of 0.1 - 1.0 %. When disposing of this reagent through lead or copper plumbing, flush with copious volumes of water to prevent azide build-up in drains. Inventory: available form stock
Specificity: 96T 48T 0.1ml 0.2ml 1ml. HLA, Class II Antigen-DR+DP Format: Purified Clone: 236-14240 Isotype: IgG2a Applications: FC,IP Quantity: 100ug Host/Source: Mouse Reactivity: Human, Pig Preservative: NaN3 Please see product document for more details.

HLA-E belongs to the HLA class I heavy chain paralogues. This class I molecule is a heterodimer consisting of a heavy chain and a light chain (beta-2 microglobulin).       Short term (up to 7 days) store at 2 to 8 degree C. Long term, aliquot and store at -20 degree C. Avoid repeated freeze/thaw cycles. Small volumes of HLA, Class II Antigen-DR+DP antibody may occasionally become entrapped in the seal of the product vial during shipment and storage. If necessary, briefly centrifuge the vial on a tabletop centrifuge to dislodge any liquid in the container`s cap. Certain products may require to ship with dry ice.

Store the antibody undiluted at 2-8°C for one week or (in aliquots) at -20°C for longer. Avoid repeated freezing and thawing.
Shelf life: one year from despatch.

Monday, December 12, 2011

Lamin A for Sale

Lamin A is a gene on chromosome 1 that encodes a protein which is a key component of the membrane surrounding the cell nucleus.Mutations in the LMNA gene are responsible for a number of genetic disorders. They are involved in the breakdown and reformation of the nuclear envelope during mitosis, as well as the positioning of nuclear pores.

Nuclear lamins, also known as Class V intermediate filaments, are fibrous proteins providing structural function and transcriptional regulation in the cell nucleus. Nuclear lamins interact with membrane-associated proteins to form the nuclear lamina on the interior of the nuclear envelope.

Lamins form dimers through their rod domain and interact with chromatin and integral proteins of the inner nuclear membrane through binding sites located in their carboxy-terminal globular tail. Mammals have two main type lamins. These proteins localize to two regions of the nuclear compartment, the nuclear lamina -- a proteinaceous structure layer subjacent to the inner surface of the nuclear envelope and throughout the nucleoplasm in the nucleoplasmic "veil". Inventory: available form stock. CaaX box that is isoprenylated and carboxymethylated (lamin C does not have a CAAX box). Lamin A is further processed to remove the last 15 amino acids and its farnesylated cysteine. Lamins are intermediate filament-type proteins which form major components of the nuclear lamina.

Comparison of the lamins to cytoskeletal intermediate filaments shows that lamins have an extra 42 residues (six heptads) within coil 1b. The c-terminal tail domain contains a nuclear localization signal (NLS), an Ig-fold-like domain, and in most cases a'][;p carboxy-terminal.
Specification: 96T 48T 0.1ml 0.2ml 1ml

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Friday, December 9, 2011

What is IgA kappa, Mouse

IgA kappa, Mouse is Shipped at 4°C. Upon delivery aliquot and store at -20°C or -80°C. Avoid repeated freeze / thaw cycles. Our Abpromise guarantee covers the use of ab37322 in the following tested applications. This product contains sodium azide. which has been classified as Xn (Harmful). in European Directive 67/548/EEC in the concentration range of 0.1–1.0%. When disposing of this reagent through lead or copper plumbing. flush with copious volumes of water to prevent azide build-up in drains. Search PubMed (MEDLINE) for references to Mouse
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user. This antibody has been selected as an isotype control as it has no known specificity. Mouse IgA, kappa [S107] (Allophycocyanin) - Isotype Control - more information Customer reviews (feedback) regarding Mouse IgA, kappa [S107] (Allophycocyanin) - Isotype Control Customer enquiries (FAQ's) regarding Mouse IgA, kappa [S107] (Allophycocyanin) - Isotype Control Protocols for Mouse IgA, kappa [S107] (Allophycocyanin) - Isotype Control Price and availability of products related to Mouse IgA, kappa [S107] (Allophycocyanin) - Isotype Control. It is suitable for use as a positive control in antibody identification screening techniques. It gives sharp precipitin lines in immunoelectrophoresis and immunodiffusion techniques. Purified proteins are recommended as ELISA coating antigens and as controls. (See Related Product Ordering Information for these products.)
Mouse IgA, kappa [S107] (Allophycocyanin) - Isotype Control - other tools: Contact Abcam with a Technical Enquiry about Mouse IgA, kappa [S107] (Allophycocyanin) - Isotype Control to add Mouse to your Antibody Update.
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Thursday, December 8, 2011

Where to Buy PTGIS Prostaglandin I2 synthase

PTGIS Prostaglandin I2 synthase encodes a member of the cytochrome P450 superfamily of enzymes. Two alternative splicing products; 5624bp (coding, 1578bp ORF) and 313bp (non-coding). The cytochrome P450 proteins are monooxygenases which catalyze many reactions involved in drug metabolism and synthesis of cholesterol, steroids and other lipids.
A 1.5kb upstream sequence presents CG-rich and pyrimidine-rich regions and contains consensus sequences for the recognition sites of Sp-1, AP-2, INF-gamma responsive element, GATA, NF-kB, glucocorticoid responsive element and a CACCC box. However, this protein is considered a member of the cytochrome P450 superfamily on the basis of sequence similarity rather than functional similarity.
This endoplasmic reticulum membrane protein catalyzes the conversion of prostglandin H2 to prostacyclin (prostaglandin I2), a potent vasodilator and inhibitor of platelet aggregation. The CG-rich region presents significant promoter activity. An imbalance of prostacyclin and its physiological antagonist thromboxane A2 contribute to the development of myocardial infarction, stroke, and atherosclerosis. It has been demonstrated that PTGIS transcription is regulated via Sp1 binding, which may affected by polymorphisms in the promoter region.
Specification: 96T 48T 0.1ml 0.2ml 1ml.
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Wednesday, December 7, 2011

What is CD20/Lambda(human)

CD20 is expressed by developing B cells as well as mature B cells but not plasma cells. The photograph of pMCs Ig cells shown is representative ( 600). c. The 2H7 monoclonal antibody reacts with human CD20, a 33-36 kDa transmembrane protein. Cells were stained with PE conjugated anti CD34 and analyzed by two color FCM. b After a 4 day coculture, EGFP expression levels in CD33+ cells were compared between the three vectors by FCM, and cytospin preparations revealed an immature myeloid cell morphology.
CD20 has been detected at low levels on a small subset of mature T cells. It is suggested that CD20 plays a role in B-cell activation. Coculture at 28 days. Constitutive EGFP expression by pMXs, pMYs, and pMCs in mature myeloid cells (upper panels), and B lymphoid cells (lower panels). The photograph of pMCs Ig cells is representative ( 600). Hairy cell leukemia (HCL) is a rare mature B-cell neoplasm, comprising 2% of lymphoid leukemias, with a predilection for middle-aged and elderly men. Patients commonly present with cytopenias, red pulp involvement of the spleen, and morphologically distinct, circulating cells with cytoplasmic projections and characteristic expression of CD25, CD11c and CD103.

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Tuesday, December 6, 2011

What is Histone H1

Histone H1 is one of the five main histone protein families which are components of chromatin in eukaryotic cells. Though highly conserved, it is nevertheless the most variable histone in sequence across species. Eukaryotic histones are basic and water soluble nuclear proteins that form hetero-octameric nucleosome particles by wrapping 146 base pairs of DNA in a left-handed super-helical turn sequentially to form chromosomal fiber.
Histones are subject to posttranslational modification by enzymes primarily on their N-terminal tails, but also in their globular domains. H1 is present in half the amount of the other four histones. This is because unlike the other histones, H1 does not make up the nucleosome "bead". Two molecules of each of the four core histones (H2A, H2B, H3, and H4) form the octamer; formed of two H2A-H2B dimers and two H3-H4 dimers, forming two nearly symmetrical halves by tertiary structure. Over 80% of nucleosomes contain the linker Histone H1, derived from an intronless gene, that interacts with linker DNA between nucleosomes and mediates compaction into higher order chromatin.
Histone H1 acts on the linker region of polynucleosome DNA to condense the chromatin into structures of ~30 nm (1). It is not necessary for octamer or nucleosome core particle formation. Instead, it sits on top of the structure, keeping in place the DNA that has wrapped around the nucleosome. Histones are basic nuclear proteins that are responsible for the nucleosome structure of the chromosomal fiber in eukaryotes. Nucleosomes consist of approximately 146 bp of DNA wrapped around a histone octamer composed of pairs of each of the four core histones (H2A, H2B, H3, and H4). The chromatin fiber is further compacted through the interaction of a linker histone, H1, with the DNA between the nucleosomes to form higher order chromatin structures.
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Sunday, December 4, 2011

Where to Get Cathepsin L

Cathepsin L has been identified independently as a 39 kDa glycoprotein with acid-proteinase activity, termed MEP major excreted protein], which is secreted by malignantly transformed mouse fibroblasts. Chromatin undergoes developmentally-regulated structural and chemical changes as cells differentiate, which subsequently lead to differences in cellular function by altering patterns of gene expression.
Cathepsin L has been identified independently also as IL8 converting enzyme and as CP-2 [cycling protein-2]. Here we show that histone H3 is proteolytically cleaved at its N-terminus during ESC differentiation. Mason et al have shown that MEP is a catalytically active precursor of cathepsin L. To gain insight into chromatin alterations that occur during mammalian differentiation, we turned to a mouse embryonic stem cell (ESC) model.
Boujrad et al have identified a 70 kDa protein complex secreted from rat Sertoli cells that stimulates steroidogenesis by Leydig cells and ovarian granulosa cells. The cathepsin L gene is activated by a variety of growth factors (PDGF and EGF), tumor promoters (including v-ras, v-src and v-mos), and second messengers (cAMP).4,9-12 Expression of cathepsins is regulated by natural inhibitors of cathepsins including the pro-peptides of papain-like cysteine proteases,13 Cystatins, 14,15 and Stefin B.16,17 Squamous cell carcinoma antigen (SSCA)18 and human c-Haras p21 (related to Cystatin b) have been shown to specifically inhibit cathepsin L.19
Cathepsin L, a lysosomal endopeptidase expressed in most eukaryotic cells, is a member of the papain-like family of cysteine proteinases. This complex is a potent activator of steroidogenesis and may regulate steroid concentrations and, thus, germ cell development in both males and females. Cathepsin L plays a major role in antigen processing, tumor invasion and metastasis, bone resorption, and turnover of intracellular and secreted proteins involved in growth regulation. This comples has been shown to consist of TIMP-1 and the proenzyme form of cathepsin L..
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Friday, December 2, 2011

How to Buy Cathepsin D

Cathepsin D is a protein that in humans is encoded by the CTSD gene. It is an estrogen-regulated, lysosomal acidic protease associated with tissue breakdown. This gene encodes a lysosomal aspartyl protease composed of a dimer of disulfide-linked heavy and light chains, both produced from a single protein precursor. This proteinase, which is a member of the peptidase C1 family, has a specificity similar to but narrower than that of pepsin A. Cathepsin D are indicative of breast cancer recurrence in both node-negative and node-positive diesease. Cathepsin D Antibody detects endogenous levels of preprocathepsin D, procathepsin D and the heavy chain subunit of mature cathepsin D.
Cathepsin D is isolated from human liver and is supplied as a powder, lyophilized from 2.5mM Sodium Phosphate, pH 6.5 ± 0.1.In addition, Protein is determined prior to lyophilization using the Bradford method. One unit of the enzyme will produce an increase in absorbance of 1.0 per ml per hour, measured at 280nm, pH 3.3, 37°C, using bovine hemoglobin as the substrate. The approach was based on random inactivation of genes by transfections with antisense cDNA expression libraries, followed by the selection of cells that survived in the presence of the external apoptotic stimulus.
A functional approach of gene cloning was applied to HeLa cells in an attempt to isolate positive mediators of programmed cell death. Cathepsin D is associated with amyloid formation in Alzheimer's plaques as is possibly linked to lung tissue damage in cigarette smokers.  An antisense cDNA fragment identical to human cathepsin D aspartic protease was rescued by this positive selection.
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Thursday, December 1, 2011

What is Cathepsin G

Cathepsin G is an enzymatic protein belonging to the peptidase or protease families.
The protein encoded by this gene, a member of the peptidase S1 protein family, is found in azurophil granules of neutrophilic polymorphonuclear leukocytes. Transcript variants utilizing alternative polyadenylation signals exist for this gene. Cathepsin G is a serine protease secreted by activated neutrophils that play a role in the inflammatory response. Cathepsin G action is protease activity-dependent and was inhibited by the presence of serine protease inhibitors.  Application & Usage: Western blotting (1:500-2000). However, the optimal conditions should be determined individually.
The encoded protease has a specificity similar to that of chymotrypsin C, and may participate in the killing and digestion of engulfed pathogens, and in connective tissue remodeling at sites of inflammation. In humans, it is coded by the CTSG gene. Because neutrophils are known to be invading leukocytes in various tumors, their products may influence the characteristics of tumor cells such as the growth state, motility, and the adhesiveness between cells or the extracellular matrix. Cathepsin G promotes E-cadherin/catenin complex formation and Rap1 activation in MCF-7 cells, which reportedly regulates E-cadherin-based cell-cell junctions.
This product gives a single arc when tested by IEP and 2D-IEP against human Cathepsin G. Identity isconfirmed by double diffusion (Ouchterlony) verses human Cathepsin G and a known anti-humanCathepsin G.
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