Description
| Product Name: | Human Visfatin Recombinant Protein |
| Product Code: | RPPB1092 |
| Size: | 25µg |
| Species: | Human |
| Target: | Visfatin |
| Synonyms: | PBEF, Pre-B cell colony-enhancing factor, Nicotinamide phosphoribosyltransferase NAmPRTase, Nampt, MGC117256, DKFZP666B131, 1110035O14Rik. |
| Source: | Escherichia Coli |
| Physical Appearance: | Sterile Filtered solution at a concentration of 1mg/ml. |
| Formulation: | Visfatin His tag protein contains 20mM Tris pH-8, 0.1mM DTT & 10% glycerol. |
| Stability: | Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time. Please avoid freeze thaw cycles. |
| Purity: | Greater than 95.0% as determined by(a) Analysis by RP-HPLC.(b) Analysis by SDS-PAGE. |
| Amino Acid Sequence: | MGSSHHHHHH SSGLVPRGSH MNPAAEAEFN ILLATDSYKV THYKQYPPNT SKVYSYFECR EKKTENSKLR KVKYEETVFY GLQYILNKYL KGKVVTKEKI QEAKDVYKEH FQDDVFNEKG WNYILEKYDG HLPIEIKAVP EGFVIPRGNV LFTVENTDPE CYWLTNWIET ILVQSWYPIT VATNSREQKK ILAKYLLETS GNLDGLEYKL HDFGYRGVSS QETAGIGASA HLVNFKGTDT VAGLALIKKY YGTKDPVPGY SVPAAEHSTI TAWGKDHEKD AFEHIVTQFS SVPVSVVSDS YDIYNACEKI WGEDLRHLIV SRSTQAPLII RPDSGNPLDT VLKVLEILGK KFPVTENSKG YKLLPPYLRV IQGDGVDINT LQEIVEGMKQ KMWSIENIAF GSGGGLLQKL TRDLLNCSFK CSYVVTNGLG INVFKDPVAD PNKRSKKGRL SLHRTPAGNF VTLEEGKGDL EEYGQDLLHT VFKNGKVTKS YSFDEIRKNA QLNIELEAAH H |
Excess adiposity is the most important risk in the development of insulin resistance and type 2 diabetes mellitus (T2DM). However, the mechanisms by which fat tissue induces insulin resistance and the role of adipocytokines in the pathogenesis of T2DM have not been well established.Visfatin, also known as pre-B cell colony-enhancing factor (PBEF), is a cytokine that is highly expressed in visceral fat and was originally isolated as a secreted factor that synergizes with IL-7 and stem cell factors to promote the growth of B cell precursors. Visfatin homologs have been identified in carp, invertebrate mollusks, and bacteria, as well as in vertebrates, including humans and the mouse. It has been postulated to play a role in innate immunity.Visfatin exerts insulin-mimetic effects that are dose-dependent and quantitatively similar to those of insulin in stimulating muscle and adipocyte glucose transport, and in inhibiting hepatocyte glucose production. Intravenous injection of recombinant visfatin in mice decreased plasma glucose in a dose-dependent fashion. In keeping with its insulin-mimetic effects, visfatin was as effective as insulin in reducing hyperglycemia in insulin-deficient diabetic mice. Visfatin was also found to be bound to and activate insulin receptor, causing receptor phosphorylation and the activation of downstream signaling molecules. However, visfatin and insulin did not compete for binding to the insulin receptor, indicating that the two proteins were recognized by different regions of the receptor. Thus, visfatin might play a role in glucose homeostasis and dysregulation in biosynthesis or signal transduction, and might contribute to the pathogenesis of diabetes.
Visfatin Human Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 511 amino acids and having a molecular mass of 57 kDa. The recombinant human Visfatin is fused to His tag at N-Terminus.
| UniProt Protein Function: | PBEF: an ubiquitous protein originally described as a cytokine which acts on early B-lineage precursor cells. Other reports indicate that PBEF is not a cytokine-like secreted protein but an intracellular protein associated with the cell cycle. Contains a catalytically active nicotinate phosphoribosyltransferase domain, an enzyme involved in nicotinamide adenine dinucleotide (NAD) biosynthesis. |
| UniProt Protein Details: | Protein type:Cell cycle regulation; Transferase; EC 2.4.2.12; Cytokine; Cofactor and Vitamin Metabolism - nicotinate and nicotinamide Chromosomal Location of Human Ortholog: 7q22.3 Cellular Component: extracellular space; cytosol; nucleus Molecular Function:protein binding; protein homodimerization activity; cytokine activity; nicotinate-nucleotide diphosphorylase (carboxylating) activity; drug binding; nicotinamide phosphoribosyltransferase activity Biological Process: circadian rhythm; vitamin metabolic process; positive regulation of smooth muscle cell proliferation; female pregnancy; signal transduction; response to organic cyclic substance; NAD biosynthetic process; cell-cell signaling; NAD metabolic process; nicotinamide metabolic process; positive regulation of cell proliferation; insulin receptor signaling pathway; positive regulation of transcription from RNA polymerase II promoter; circadian regulation of gene expression; water-soluble vitamin metabolic process; positive regulation of nitric-oxide synthase biosynthetic process |
| NCBI Summary: | This gene encodes a protein that catalyzes the condensation of nicotinamide with 5-phosphoribosyl-1-pyrophosphate to yield nicotinamide mononucleotide, one step in the biosynthesis of nicotinamide adenine dinucleotide. The protein belongs to the nicotinic acid phosphoribosyltransferase (NAPRTase) family and is thought to be involved in many important biological processes, including metabolism, stress response and aging. This gene has a pseudogene on chromosome 10. [provided by RefSeq, Feb 2011] |
| UniProt Code: | P43490 |
| NCBI GenInfo Identifier: | 1172027 |
| NCBI Gene ID: | 10135 |
| NCBI Accession: | P43490.1 |
| UniProt Related Accession: | P43490 |
| Molecular Weight: | |
| NCBI Full Name: | Nicotinamide phosphoribosyltransferase |
| NCBI Synonym Full Names: | nicotinamide phosphoribosyltransferase |
| NCBI Official Symbol: | NAMPT�� |
| NCBI Official Synonym Symbols: | VF; PBEF; PBEF1; VISFATIN; 1110035O14Rik�� |
| NCBI Protein Information: | nicotinamide phosphoribosyltransferase |
| UniProt Protein Name: | Nicotinamide phosphoribosyltransferase |
| UniProt Synonym Protein Names: | Pre-B-cell colony-enhancing factor 1; Pre-B cell-enhancing factor; Visfatin |
| UniProt Gene Name: | NAMPT�� |
| UniProt Entry Name: | NAMPT_HUMAN |
