VEGF121

CAT: 0209-300-031Size: 5 µgDry Ice: NoHazardous: No
CAT#:0209-300-031Size:5 µg
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Description
Human Vascular Endothelial Growth Factor121 (VEGF121), a 18 kDa protein consisting of 121 amino acid residues is produced as a homodimer. VEGF is a polypeptide growth factor and a member of the platelet-derived growth factor family. It is a specific mitogen for vascular endothelial cells and a strong angiogenic factor in vivo. Two high-affinity tyrosine kinase receptors for VEGF165 have been identified, VEGFR-1 (FLT-1), and VEGFR-2 (KDR) . Consistent with the endothelial cell-specific action of VEGF165, expression of both receptor genes has been found predominantly but not exclusively on endothelial cells. Expression of VEGFR-1 was also found on human monocytes, neutrophils (PMNs), bovine brain pericytes and villous and extra villous trophoblast. In addition to its action as a mitogen it is a potent vascular permeability factor (VPF) in vivo. VEGF165 is also a chemo attractant molecule for monocytes and endothelial cells. 5 different proteins are generated by differential splicing: VEGF121, VEGF145, VEGF165, VEGF189 and VEGF206. The most abundant form is VEGF165. Whereas VEGF121 and VEGF165 are secreted proteins, VEGF145, VEGF189 and VEGF206 are strongly cell-associated. The isoforms VEGF145, VEGF165 and VEGF189 bind to heparin with high affinity. VEGF165 is apparently a homo-dimer, but preparations of VEGF165 show some heterogeneity on SDS gels, depending on the secretion of different glycosylation patterns. All dimeric forms have similar biological activities but their bioavailability is very different. There is good evidence that different cells and tissues express different VEGF isoforms. The other members of this increasing growth factor family are VEGF-B, -C, -D and -E. Another member is the Placenta growth factor PlGF.
Synonyms
Vascular endothelial growth factor A 121; VEGFA; VPF; VEGF; MVCD1
NCBI Gene ID
7422
UniProt
P15692
Accession Number
NP_001020537.2
Accession Number mRNA
NM_001025366.2
Chromosomal Location
6p12
Reactivity
Human
Cross Reactivity
Human
Sequence
APMAEGGGQNHHEVVKFMDVYQRSYCHPIETLVDIFQEYPDEIEYIFKPSCVPLMRCGGCCNDEGLECVPTEESNITMQIMRIKPHQGQHIGEMSFLQHNKCECRPKKDRARQEKCDKPRR
Assay Protocol
The lyophilized VEGF121 should be reconstituted in 50 mM acetic acid 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.
Purity
> 90% by SDS-PAGE
Bioactivity
Measured in a cell proliferation assay using primary HUVECs. The ED50 for this effect is typically 2 - 10ng/mL.
Length
121
Form
Lyophilized
Buffer
50mM acetic acid
Reconstitution
50 mM acetic acid
Molecular Weight
36 kDa
Storage Conditions
Lyophilized samples are stable for greater than six months at -20°C to -70°C. Reconstituted VEGF121 should be stored in working aliquots at -20°C.
Host or Source
Insect cells
N Terminal Sequence
APMAEGG

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