Peptides

<p>Iberiotoxin a synthetic scorpion toxin sourced from the Buthus tamulus scorpion, has disufide bonds formed between Cys7-Cys28, Cys13-Cys33, and Cys17-Cys35. This prodict can be used as a Ca2+-Activated K+ Channel Blocker (Maxi-K+ Channel Blocker). This peptide can be used in pharmacological studies to investigate the effects of Iveriotoxin on various ion channels and receptors. This product is available as a 0.1mg vial.</p>

<p>Custom research peptide; min purity 95%.</p>

<p>This product has disulfide bonds between Cys1-Cys15 and Cys3-Cys11 and is available as a 0.1mg vial. Big Endothelin-1 (Human, 1-38) is part of the full lengthed 29 amino acid peptide Big Endothlin-1 which is a precursor peptide of the vasoconstrictorEndothelin-1 (ET-1). ET-1 exhibits vasoconstrictive properties and is an activator of endothelin G-protein coupled receptors. Furthermore ET-1 is produced when inflammation, vascular stress or hypoxia occurs. In vivo Big Endothelin-1 has a greater half life compared to ET-1 and therefore makes it useful to study secretory activity in the endothelial system.<br>Overall Big Endothelin-1 (Human, 1-38) can be used as a research tool for studying protein interactions, receptor activation and function, and ligand binding. This peptide is also used in pharmacology to study the effects of therapeutic agents on receptor activity and expression.</p>

<p>Neurokinin A is a peptide that is derived from the precursor protein, preprotachykinin A, and has been found to be an endogenous ligand for the NK-1 receptor. It is involved in a wide range of physiological processes such as neurotransmission and regulation of blood pressure. Neurokinin A has been shown to inhibit adenylate cyclase activity in guanethidine-sensitive tissues and ionophores-resistant cells. The effects of Neurokinin A are not due to its ability to bind to the NK-1 receptor but rather through other mechanisms. The amino acid sequence of this peptide was first determined by cloning methods in 1984 and it has since been used extensively as a tool for studying the function of this receptor. Neurokinin A also inhibits cell proliferation in glioma cells and has been shown to have an inhibitory effect on Ca2+ concentration during electrical nerve stimulation.</p>

<p>The Glucagon (Human, Rat, Mouse)-EIA Kit is a competitive enzyme immunoassay for the quantitative measurement of human glucagon in urine. The kit provides a competitive binding assay format that is designed to measure the concentration of glucagon in urine samples and provides a quantitative result.</p>

<p>Custom research peptide; min purity 95%.</p>

<p>A synthetic peptide for use as a blocking control in assays to test for specificity of STAT5B antibody, catalog no. 20R-1134</p>

<p>A synthetic peptide for use as a blocking control in assays to test for specificity of C1orf131 antibody, catalog no. 70R-4090</p>

<p>Azido-dPEG®3-Amine is a PEG compound with two different functional groups (also known as heterobifunctional). Unlike homobifunctional PEG compounds (same functional group on both ends), this type of compounds are more versatile as have two different anchor points. Azido-dPEG®3-Amine is used as a linker and spacer to add a PEG moiety, via pegylation (a bioconjugation technique) to proteins, peptides, oligonucleotides, small molecules and nanoparticles.</p>

<p>AMC is a peptide that acts as an activator of the nicotinic acetylcholine receptor. AMC is a high-purity, ion channel ligand with a CAS No. 26093-31-2. It is used in life science research to study cell biology and pharmacology. AMC has been shown to be an inhibitor of the enzyme acetylcholinesterase (AChE) in rat brain slices and it has been reported that it can inhibit the proliferation of human leukemia cells.END&gt;</p>

<p>A synthetic peptide for use as a blocking control in assays to test for specificity of SYNCRIP antibody, catalog no. 70R-1335</p>

<p>A synthetic peptide for use as a blocking control in assays to test for specificity of KRAS antibody, catalog no. 70R-5673</p>

<p>Portion of Influenza M</p>

<p>Custom research peptide; min purity 95%.</p>

<p>A synthetic peptide for use as a blocking control in assays to test for specificity of FMOD antibody, catalog no. 70R-5310</p>

<p>MOG(35-55) human corresponds to amino acids 35 to 55 of the human myelin oligodendrocyte glycoprotein (MOG). It can be used in multiple sclerosis research to induce experimental autoimmune encephalomyelitis (EAE) in mouse and rat models.</p>

<p>Cysteine peptide (Ac RFAAKAA COOH) is used in combination with Lysinepeptide (Ac RFAACAA COOH) in the Direct Peptide Reactivity Assay (DPRA) test.<br>Direct Peptide Reactivity Assay is used in cosmetic applications for the characterization of the skin sensitizing potential of a substance, framed by OECD Guideline no 442.<br>The molecular initiating event (MIE) in skin sensitization is a binding between epidermal proteins and the sensitizing chemical substance. MIE is part of the adverse outcome pathway (AOP) of skin sensitization.<br>It is thanks to the properties of Lysine peptide and Cysteine peptide that the chemical binding will be able to take place, so these synthetic heptapeptides will mimic the reaction of a skin exposed to a substance.<br>Binding between nucleophilic proteins and electrophile substance will be measured by High Performance Liquid Chromatography (HPLC). Therefore, the decrease in Lysine peptide and Cysteine peptide levels will be a sign of sensitizing event. Depending on the rate of depletion, the sensitizing character of a molecule will be determined (see table at the bottom of the page).<br>In chemico DPRA test also has wider applications such as hazard classification in cosmetics, but also for pharmaceuticals and biocides. It is a good alternative to animal experimentation.</p>

<p>Neutrophil Gelatinase Associated Lipocalin (NGAL) is a lipocalin protein that is involved in many physiological and pathophysiological processes. NGAL binds to bacterial products, such as lipopolysaccharide, and can be used as a biomarker for inflammation or infection. NGAL has been shown to be elevated in the urine of patients with urinary tract infections. Additionally, NGAL has been shown to be associated with neurological diseases, such as Alzheimer's disease and Parkinson's disease. The recombinant human form of this protein can be used for research purposes or for the development of diagnostic tools. Neutrophil Gelatinase Associated Lipocalin (NGAL) is a lipocalin protein that is involved in many physiological and pathophysiological processes. It binds to bacterial products, such as lipopolysaccharide, and can be used as a biomarker for inflammation or infection. NGAL has been shown to be elevated in the urine of patients</p>

<p>Decorsin is a research tool that is an activator and ligand for the human receptor. It binds to the receptor by altering its conformation, which leads to cell signaling. Decorsin has been shown to inhibit ion channels, such as potassium channels, and may also function as a receptor antagonist. Decorsin is a high-purity protein with a purity of &gt; 95%. This protein is used in cell biology, pharmacology, and life science research. It can be used as an inhibitor of peptides in the field of protein interactions.</p>

<p>Rituximab is a chimeric monoclonal antibody used in the treatment of some cancers like CD20 non-Hodgkin's lymphoma and a few autoimmune conditions such as rheumatoid arthritis. However, antibody treatment can lead to generation of neutralising antibodies thus curtailing the efficacy of the therapy. CD 4+ T cells are critical to initiate antibody response so identification of epitopes within molecules using T cell assays can be a vital tool for understanding the immune response and thereby prevent induction of neutralising antibodies. Within rituximab, the variable region of the light chain (41-55) was found to have strong affinity for leukocytes in a specific binding assay, the epitope was also correlated to patients who developed neutralising antibodies. This T cell epitope within rituximab in further immune studies could help design or selection of antibodies without T cell epitopes present for low immunogenicity.</p>