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背景介绍 TNF-β is a potent mediator of inflammatory and immune responses. It belongs to the TNF family of ligands and signals through TNFR1 and TNFR2. TNF-β is produced by activated T and B lymphocytes, and has similar activities to TNF-alpha. Like TNF-α, TNF-β is involved in the regulation of various biological processes including cell proliferation, differentiation, apoptosis, lipid metabolism, coagulation, and neurotransmission. TNF-β is secreted as a soluble polypeptide, but can form heterotrimers with lymphotoxin-β, which effectively anchors the TNF- β to the cell surface. TNF-β is cytotoxic to a wide range of tumor cells. 产品介绍 Recombinant TNF-beta is a non disulfide-linked homotrimer protein, each consisting of 172 amino acids and migrates as an approximately 21 kDa protein under reducing conditions. Optimized DNA sequence encoding Human Tumor Necrosis Factor-beta chain was expressed in E. coli.
询价背景介绍 TNF-β is a potent mediator of inflammatory and immune responses. It belongs to the TNF family of ligands and signals through TNFR1 and TNFR2. TNF-β is produced by activated T and B lymphocytes, and has similar activities to TNF-alpha. Like TNF-α, TNF-β is involved in the regulation of various biological processes including cell proliferation, differentiation, apoptosis, lipid metabolism, coagulation, and neurotransmission. TNF-β is secreted as a soluble polypeptide, but can form heterotrimers with lymphotoxin-β, which effectively anchors the TNF- β to the cell surface. TNF-β is cytotoxic to a wide range of tumor cells. 产品介绍 Recombinant TNF-beta is a non disulfide-linked homotrimer protein, each consisting of 172 amino acids and migrates as an approximately 21 kDa protein under reducing conditions. Optimized DNA sequence encoding Human Tumor Necrosis Factor-beta chain was expressed in E. coli.
询价背景介绍 Tumor Necrosis Factor is secreted by macrophages, monocytes, neutrophils, T-cells, and NK- cells following their stimulation by bacterial lipopolysaccharides. Cells expressing CD4 secrete TNF-alpha while CD8(+) cells secrete little or no TNF-alpha. Stimulated peripheral neutrophilic granulocytes but also unstimulated cells and also a number of transformed cell lines, astrocytes, microglial cells, smooth muscle cells, and fibroblasts also secrete TNF. Human milk also contains this factor. The synthesis of TNF-alpha is induced by many different stimuli including interferons, IL-2, GM-CSF, SP, Bradykinin, Immune complexes, inhibitors of cyclooxygenase and PAF (platelet activating factor). Human TNF-alpha is a non-glycosylated protein of 17 kDa and a length of 157 amino acids. Murine TNF-alpha is N-glycosylated. Homology with TNF-beta is approximately 30%. TNF-alpha forms dimers and trimers. 产品介绍 Recombinant TNF-alpha is a disulfide-linked monomer protein, consisting of 158 amino acids and migrates as an approximately 17 kDa protein under reducing conditions. Optimized DNA sequence encoding Human Tumor Necrosis Factor-alpha chain was expressed in E. coli.
询价背景介绍 Tumor Necrosis Factor is secreted by macrophages, monocytes, neutrophils, T-cells, and NK- cells following their stimulation by bacterial lipopolysaccharides. Cells expressing CD4 secrete TNF-alpha while CD8(+) cells secrete little or no TNF-alpha. Stimulated peripheral neutrophilic granulocytes but also unstimulated cells and also a number of transformed cell lines, astrocytes, microglial cells, smooth muscle cells, and fibroblasts also secrete TNF. Human milk also contains this factor. The synthesis of TNF-alpha is induced by many different stimuli including interferons, IL-2, GM-CSF, SP, Bradykinin, Immune complexes, inhibitors of cyclooxygenase and PAF (platelet activating factor). Human TNF-alpha is a non-glycosylated protein of 17 kDa and a length of 157 amino acids. Murine TNF-alpha is N-glycosylated. Homology with TNF-beta is approximately 30%. TNF-alpha forms dimers and trimers. 产品介绍 Recombinant TNF-alpha is a disulfide-linked monomer protein, consisting of 158 amino acids and migrates as an approximately 17 kDa protein under reducing conditions. Optimized DNA sequence encoding Human Tumor Necrosis Factor-alpha chain was expressed in E. coli.
询价背景介绍 Thymus and activation-regulated chemokine (TARC) is a recently identified CC chemokine that is expressed constitutively in thymus and transiently in stimulated peripheral blood mononuclear cells. TARC functions as a selective chemoattractant for T-cells that express a class of high affinity receptors binding TARC. The chemokine TARC is a ligand for the chemokine receptor CCR4 expressed on T helper (Th)2- type CD4 T cells. 产品介绍 Recombinant TARC (CCL17) is a disulfide-linked monomeric protein consisting of 72 amino acid residues and migrates as an approximately 8 kDa protein under non-reducing conditions and reducing conditions in SDS-PAGE. Optimized DNA sequence encoding Human TARC (CCL17) mature chain was expressed in E. coli.
询价背景介绍 Thymus and activation-regulated chemokine (TARC) is a recently identified CC chemokine that is expressed constitutively in thymus and transiently in stimulated peripheral blood mononuclear cells. TARC functions as a selective chemoattractant for T-cells that express a class of high affinity receptors binding TARC. The chemokine TARC is a ligand for the chemokine receptor CCR4 expressed on T helper (Th)2- type CD4 T cells. 产品介绍 Recombinant TARC (CCL17) is a disulfide-linked monomeric protein consisting of 72 amino acid residues and migrates as an approximately 8 kDa protein under non-reducing conditions and reducing conditions in SDS-PAGE. Optimized DNA sequence encoding Human TARC (CCL17) mature chain was expressed in E. coli.
询价背景介绍 Cu/Zn Superoxide Dismutase (SOD1) antagonizes IL3 dependent proliferation of cells in culture and reversibly inhibits DNA synthesis of erythroid progenitor cells. SOD1 binds copper and zinc ions and is one of two isozymes responsible for destroying free superoxide radicals in the body. SOD1 is a soluble cytoplasmic protein, acting as a homodimer to convert naturally-occuring but harmful superoxide radicals to molecular oxygen and hydrogen peroxide. The other isozyme is a mitochondrial protein. Mutations in this gene have been implicated as causes of familial amyotrophic lateral sclerosis. 产品介绍 SOD is a disulfide-linked homodimeric protein consisting of two 154 amino acid residues, and migrates as an approximately 31 kDa protein under non-reducing and as 16 kDa under reducing conditions in SDS-PAGE. Optimized DNA sequence encoding Human Superoxide Dismutase mature chain was expressed in E. coli.
询价背景介绍 Cu/Zn Superoxide Dismutase (SOD1) antagonizes IL3 dependent proliferation of cells in culture and reversibly inhibits DNA synthesis of erythroid progenitor cells. SOD1 binds copper and zinc ions and is one of two isozymes responsible for destroying free superoxide radicals in the body. SOD1 is a soluble cytoplasmic protein, acting as a homodimer to convert naturally-occuring but harmful superoxide radicals to molecular oxygen and hydrogen peroxide. The other isozyme is a mitochondrial protein. Mutations in this gene have been implicated as causes of familial amyotrophic lateral sclerosis. 产品介绍 SOD is a disulfide-linked homodimeric protein consisting of two 154 amino acid residues, and migrates as an approximately 31 kDa protein under non-reducing and as 16 kDa under reducing conditions in SDS-PAGE. Optimized DNA sequence encoding Human Superoxide Dismutase mature chain was expressed in E. coli.
询价背景介绍 SDF-1alpha and SDF-1beta are small cytokines belonging to the CXC- Chemokines. SDF-1 is identical with a chemokine reported to function as a pre-B-cell growth factor in the presence of IL-7 and isolated originally from a murine bone marrow stromal cell line. Human SDF-1alpha and SDF-1beta are encoded by a single gene and arise by alternative splicing. SDF-1 acts on lymphocytes and monocytes but not neutrophils in vitro and is a highly potent chemoattractant for mononuclear cells in vivo. In addition, SDF-1 also induces intracellular actin polymerization in lymphocytes. SDF acts as a chemoattractant for human hematopoietic progenitor cells expressing CD34 giving rise to mixed types of progenitors, and more primitive types. The chemotactic response is inhibited by pertussis toxin. Chemotaxis of CD34(+) cells in response to SDF is increased by IL-3 in vitro. SDF has been shown also to induce a transient elevation of cytoplasmic calcium in these cells. 产品介绍 Recombinant murine stromal cell-derived factor-1beta (SDF1β), also known as CXCL12 or Pre-B cell growth-stimulating factor (PBSF), is a disulfide-linked monomeric protein consisting of 73 a.a. and migrates as an approximately 8 kDa protein under reducing and non-reducing conditions. Optimized DNA sequence encoding mouse Stromal Cell-Derived Factor-1 beta (SDF1β) mature chain was expressed in E. coli.
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