Proteins and Peptides

alpha-Bungarotoxin is a snake venom-derived toxin that irreversibly binds nicotinic acetylcholine receptors (Ki = ~2.5 µM in rat) present in skeletal muscle, blocking action of acetylcholine at the postsynaptic membrane and leading to paralysis. It has been widely used to characterize activity at the neuromuscular...

A nucleosome is the basic repeating unit of chromatin in which 146 base pairs of DNA wrap twice around a histone octamer consisting of two copies of each of the core histones, H2A, H2B, H3, and H4. The combination of two H2A/H2B dimers and one H3/H4 tetramer create the nucleosome core. Histone H3 undergoes many...

Fibrinogen is a plasma clotting factor composed of three different polypeptide chains (alpha, beta and gamma). Under chronic inflammatory conditions, fibrinogen can be acted upon by the enzyme peptidylarginine deiminase 4 (PAD4), converting specific arginine residues to citrulline. Patients with rheumatoid arthritis...

Erythropoietin is the principal hormone involved in the regulation of erythrocyte differentiation and the maintenance of a physiological level of circulating erythrocyte mass. (www.uniprot.org) Produced in CHO cells. Single polypeptide chain containing 165 amino acids. Predicted molecular mass of 21,000 Dalton and...

COX-1 catalyzes the first step in the biosynthesis of prostaglandins (PGs), thromboxanes, and prostacyclins: the conversion of arachidonic acid to PGH2. COX-1 is constitutively expressed in almost all animal tissues and is involved in the homeostatic role of eicosanoids. COX-1 from ram seminal vesicles has an...

Cyclooxygenase 2 (COX-2) catalyzes the first step in the biosynthesis of prostaglandins (PGs), thromboxanes, and prostacyclins: The conversion fo arachidonic acid (Cay-90010) to PGH2 (Cay-17020). Discoveries of the induction of COX expression by a variety of stimuli such as phorbol esters, lipopolysaccharides, and...

Authentic recombinant human protein, human cell expressed, which in general ensures proper folding, phosphorylation, disulfide bridge formation, proteolytic processing, and glycosylation. Endotoxin <0.1 EU/µg.

Authentic recombinant human protein, human cell expressed, which in general ensures proper folding, phosphorylation, disulfide bridge formation, proteolytic processing, and glycosylation. Endotoxin <0.5 EU/µg.

Recombinant protein mutant corresponds to amino acids 1 to 480 of mature human AKT1, Akt isoform 1. There are two point mutation of key activating residues, T308A and S473A. The recombinant protein contains a polyhistidine affinity tag at the amino terminus. Purity is greater than 90% as determined by reducing and...

Human transferrin is encoded by the TF gene and is an iron-binding blood plasma glycoprotein that controls the level of free iron in biological fluids. Human transferrin binds iron very tightly but reversibly. Human transferrin is the most important iron pool in mammals. Human transferrin has a molecular weight of...