You searched for: Proteins and Peptides

Proteins are used in routine laboratory procedures such as binding enzymes or coupling peptides to carrier proteins. These kits, mixture solutions, and collagen matrices fulfill a myriad of essential laboratory functions for developing relationships between proteins and other cellular components. The stimulating proteins offered have various amino acid arrangements and functions to fulfill any sample manipulation for testing purposes in any field.

Sort By

« ‹ 9 10 11 › »

Horse Recombinant PDGF-BB (from E. coli)

Supplier: Shenandoah Biotechnology

Platelet-derived growth factor (PDGF) is an important regulator of cell growth, proliferation, and angiogenesis. PDGF synthesis is induced by IL-1, IL-6, TNF-α, TGF-β, and EGF signaling. PDGF functions as a mitogenic growth hormone on cells of mesenchymal lineage, such as smooth muscle and glial cells. PDGF is also stored in the alpha-granules of platelets and is released upon adherence to traumatised tissues. PDGF is a dimeric glycoprotein formed by two A chains (AA), two B chains (BB), or as a heterodimer with an A and a B chain (AB). The PDGF dimer binds the cell surface receptor tyrosine kinases PDGFR-α and PDGFR-β.

Expand 5 Items

Mouse Recombinant IL-21 (Animal free) (from E. coli)

Supplier: Shenandoah Biotechnology

Interleukin 21 (IL-21) is a member of the common-gamma chain family of cytokines that are involved in immunoregulation. IL-21 is normally expressed by activated CD4+ T cells. The IL-21 receptor (IL-21R) activates the JAK/STAT signaling pathway and is expressed on T, B, and natural killer (NK) cells. Within the B cell lineage, IL-21 is a switch factor regulating IgG1 and IgG3 antibody production. IL-21 also cooperates with interleukin 4 (IL-4) for the production of multiple antibody classes in B cells. IL-21 has pleiotropic effects on the proliferation, differentiation, and effector functions of B, T, NK, and dendritic cells.

Expand 4 Items

Human Recombinant IL-34 (from CHO cells)

Supplier: Shenandoah Biotechnology

Interleukin 34 (IL-34) was originally identified in humans, by large scale screening of secreted proteins; orthologs have also been found in chimpanzee, murine, rat and chicken. Human IL-34 is synthesized as a 242 amino acid (aa) precursor that contains a 20 aa signal sequence and a 222 aa mature chain. IL-34 is secreted as a homodimer and contains one potential N-glycosylation site. IL-34 increases proliferation of immune cells known as monocytes; it elicits its activity by binding the Colony Stimulating Factor 1 Receptor (CSF-1R). Expression of IL-34 is most abundant in the spleen and is expressed in many other tissues including the heart, brain, liver, kidney, thymus, intestine and lung. Human IL-34 contains a C-terminal 6x-polyhistidine (6xHis) tag.

Expand 4 Items

Human recombinant TrkA-Fc Chimera (from HEK293 cells)

Supplier: Biosensis

TrkA is a member of the neurotrophic tyrosine kinase receptor family. It is a membrane-bound receptor that upon neurotrophin binding, phosphorylates itself and members of the MAPK pathway. TrkA is required for high-affinity binding to nerve growth factor (NGF), neurotrophin-3 and neurotrophin-4/5 but not brain-derived neurotrophic factor (BDNF). TrkA leads to cell differentiations and may play a role in specifying sensory neuron subtypes. It has a crucial role in the development and function of the nociceptive reception system as well as establishment of thermal regulation via sweating. SUBUNIT: Exists in a dynamic equilibrium between monomeric (low affinity) and dimeric (high affinity) structures. SUBCELLULAR LOCATION: TrkA is a heavily glycosylated transmembrane protein and contains 13 potential N-linked glycosylation sites. The TrkA-Fc chimera has N-linked and may have O-linked oligosaccharides.

Expand 2 Items

Fluor-de-Lys® SIRT1 deacetylase substrate

Supplier: Enzo Life Sciences

Fluor de Lys®-SIRT1 is a fluorogenic, acetylated peptide substrate for SIRT1 (human Sirtuin 1). Based on residues 379-382 of p53 (Arg-His-Lys-Lys(Ac)), a site of regulatory acetylation by the p300 and CBP acetyltransferases (lysines 381, 382), it was the best substrate for SIRT1 from among a panel of substrates patterned on p53, histone H3, and histone H4 acetylation sites. Fluor de Lys®-SIRT1 is deacetylated by SIRT1 (BML-SE239) at a rate of more then 8-fold that of the acetylated lysine substrate, Fluor de Lys® (Prod. No. BML-KI104; acetylated substrates both at 25 µM, 500 µM NAD+). The Km of Fluor de Lys®-SIRT1 for human recombinant Sirtuin 1 is 108 µM (determined at 37°C, 500 µM NAD+). Must be used in conjunction with Fluor de Lys® Developer II (Prod. No. BML-KI176). Fluorescent signal indicates deacetylation of Lys382. Sufficient for 100-200 assays of human recombinant SIRT1 (1U/well, 50-100 µM substrate).