Human PlGF-1/His
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| Cat-Nr. | 300-018 |
| Size | 20 µg |
| Price | 370 € |
| Source | Insect cells |
| Label | His-Tag |
| Formulation | lyophilized |
| Purity Confirmation | > 95% by SDS-PAGE |
| Length [aa] | 139 |
| Molecular Weight | ~36.5 kDa |
| Biological Activity | Testing in progress. |
| Species Reactivity | Human |
| Buffer | 50mM acetic acid |
| Stabilizer/Carrier | BSA (50-fold) |
| Reconstitution | Centrifuge vial prior to opening. The PlGF-1 is supplied in lyophilized form with carrier-protein (BSA) and can be reconstituted with 50mM acetic acid or PBS/water. This solution can be diluted into other buffered solutions or stored frozen for future use. |
| Stability and Storage | The lyophilized human PIGF-1, though stable at room temperature, is best stored in working aliquots at -20°C to -70°C. |
| Synonyms | PlGF; placental growth factor |
| Description | Human Placenta Growth Factor-1 (PlGF-1), a 19 kDa protein consisting of 131 amino acid residues and fused to a C-terminal His-tag (6x His), is produced as a homodimer. Human Placenta Growth Factor (PlGF) is a polypeptide growth factor and a member of the platelet-derived growth factor family but more related to vascular endothelial growth factor (VEGF). PlGF-1 acts only as a very weak mitogen for some endothelial cell types and as a potent chemoattractant for monocytes. The physiological function in vivo is still controversal. In several reports it was shown not to be a potent mitogen for endotehlial cells and not angiogenic in vivo by using different assays. Very recently it was shown by one investigator, that PlGF-1 from cell culture supernatants was angiogenic in the CAM assay and in the rabbit cornea assay. At least one high-affinity receptor for PlGF (FLT-1 or VEGF-R1) has been demonstrated in different primary cell types (e.g. human umbilical vein endothelial cells and monocytes) but PlGF does not bind to KDR/flk-1. Two different proteins can be generated by differential splicing of the human PlGF gene: PlGF-1 (131 aa native chain) and PlGF-2 (152 aa native chain). Both mitogens are secretable proteins, but PlGF-2 can bind to heparin with high affinity. PlGF-1 is a homodimer, but preparations of PlGF show some heterogeneity on SDS gels depending of the varying degrees of glycosylation. All dimeric forms posses a similar biological profile. There is good evidence that heterodimeric molecules between VEGF and PlGF exists and that they are biological active. Different cells and tissues (e.g. placenta) express PlGF-1 and PlGF-2 at different rates. A much related protein of PlGF is VEGF with about 53% homology and VEGF-B with similar biological activities. |
| Protein Sequence | LPAVPPQQWALSAGNGSSEVEVVPFQEVWGRSYCRALERLVDVVSEYPSEVEHMFSPSCVSLLRCTGCCGDENLHCVPVETANVTMQLLKIRSGDRPSYVELTFSQHVRCECRPLREKMKPERCGDAVPRRTRHHHHHH |
| Uniprot ID | P49763 |
| Protein RefSeq | NP_001193941.1 |
| mRNA RefSeq | NM_001207012.1 |
Figures
SDS-PAGE analysis of recombinant human PlGF-1-His. Samples were loaded in 15% SDS-polyacrylamide gel under reducing conditions and visualized with Silver stain.
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