Description / human VEGF-B167 protein
VEGF-B, a member of the VEGF family, is a potent growth and angiogenic cytokine. It promotes DNA synthesis in endothelial cells, helps regulate angiogenesis and vascular permeability, and inhibits apoptosis in certain smooth muscle cells and neurons. VEGF-B is expressed in all tissues except the liver. It forms cell surfaced-associated disulfide linked homodimers and can form heterodimers with VEGF-A. There are two known isoforms, formed by alternative splicing, which have been designated VEGF-B167 and VEGF-B186. Both forms have identical amino-terminal sequences encoding a “cysteine knot” like structural motif, but differ in their carboxyl-terminal domains. Both VEGF-B isoforms signal only through the VEGFR1 receptor. Recombinant human VEGF-B is a 38.0 kDa disulfide-linked homodimeric protein consisting of two 167 amino acid polypeptide chains.
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| Size | 20 µg |
|---|---|
| Source | E. coli |
| Biological Activity | Measured by its binding ability in a functional ELISA. Immobilized human sVEGFR-1/Flt-1 at 1 µg/mL (100 µL/well) can bind rhVEGF-B167 with a linear range of 0.5 ng/mL to 12.5 ng/mL. |
| N Terminal Sequence | MPVSQ |
| Purity Confirmation | > 98% by SDS-PAGE & Coomassie stain |
| Length [aa] | 167 |
| Molecular Weight | 38 kDa |
| Species Reactivity | Human |
| Formulation | lyophilized |
| Buffer | 50mM acetic acid |
| Protein Sequence | MPVSQPDAPGHQRKVVSWIDVYTRATCQPREVVVPLTVELMGTVAKQLVPSCVTVQRCGGCCPDDGLECVPTGQHQVRMQILMIRYPSSQLGEMSLEEHSQCECRPKKKDSAVKPDSPRPLCPRCTQHHQRPDPRTCRCRCRRRSFLRCQGRGLELNPDTCRCRKLRR |
| Reconstitution | The lyophilized VEGF-B167 should be reconstituted in water to a concentration not lower than 50 µg/ml. For long term storage we recommend to add at least 0.1% human or bovine serum albumin. |
| Stability and Storage | Lyophilized samples are stable for greater than six months at –20°C to –70°C. Reconstituted VEGF-B167 should be stored in working aliquots at -20°C. |
| Synonyms | vascular endothelial growth factor B; VEGFB; VRF; VEGFL |
| Uniprot ID | P49765 |
| Protein RefSeq | NP_003368.1 |
| mRNA RefSeq | NM_003377.4 |