VEGF Receptor 1 (FLT1) Rabbit Polyclonal Antibody

Specifications

Product Data
Applications	ICC/IF, IHC, WB
Recommend Dilution	Western Blot: 1:100 - 1:2000, Immunohistochemistry: 1:250 - 1:500, Immunohistochemistry-Paraffin: 1:250 - 1:500, Immunocytochemistry/ Immunofluorescence: 1:500
Reactivity	Human
Host	Rabbit
Clonality	Polyclonal
Immunogen	A synthetic peptide made to an internal region of the mouse VEGF Receptor 1 protein (between residues 800-900) [UniProt# P35969]. There is 87% identity between the immunogen used for this production and the VEGF Receptor 2 protein.
Formulation	Tris-citrate/phosphate, pH 7, 0.1% Sodium azide. Store at 4C. Do not freeze.
Concentration	lot specific
Purification	Immunogen affinity purified
Conjugation	Unconjugated
Storage Condition	Store at -20°C as received.
Gene Name	fms related tyrosine kinase 1
Database Link	NP_001153392 Entrez Gene 2321 Human UniProt ID P17948
Background	VEGF Receptor 1 (vascular endothelial growth factor receptor 1 or VEGFR1; also called Flt1 in mouse) is a tyrosine-protein kinase which acts as a cell-surface receptor for VEGFA, VEGFB and PGF ligands for playing an essential role in the embryonic vasculature development and regulation of angiogenesis (normal as well as cancerous tissues), cell survival, migration, macrophage function, chemotaxis, and tumor invasion. VEGFR1 is a 180-185 kD glycoprotein expressed primarily in vascular endothelial cells and also found in a wide range of non-endothelial cells, such as monocytes and macrophages, human trophoblasts, renal mesangial cells, vascular smooth muscle cells, dendritic cells and different human tumour cell types. Interestingly, VEGFR1 acts as a negative regulator of embryonic angiogenesis by inhibiting excessive proliferation of endothelial cells, whereas it promotes endothelial cell proliferation, survival and angiogenesis in adults. VEGFR1 expression is regulated by hypoxia through HREs in VEGFR1 promoter. It exists in an inactive conformation in the absence of bound ligand and binding of VEGFA, VEGFB or PGF leads to its dimerization followed by tyrosine residue autophosphorylation mediated activation. VEGFR1 phosphorylation sites includes Tyr794, Tyr1169, Tyr1213, Tyr1242, Tyr1327, Tyr1333 etc. and VEGFR1 phosphorylation pattern depends on the ligand, e.g. PlGF, but not VEGFA, induces phosphorylation of Tyr1309. VEGFR1 has been shown to exert its diverse biological activities through its effects on multiple signal transduction pathways including VEGF, KDR, PLCG, PI3K, MAPK etc.
Synonyms	FLT; FLT-1; VEGFR-1; VEGFR1
Note	This VEGF Receptor 1 antibody is useful for Western blot, where a band is seen at ~180-230 kDa (the theoretical molecular weight of mouse VEGFR1 is ~150 kDa and human VEGFR1 is ~151 kDa). The difference in MWs is likely due to glycosylation or other post translational modifications. With CSF-1R/VEGFR2 chimera transfected lysates a doublet is seen at ~150 kDa representing VEGFR-2. An unknown band is also seen at ~50 kDa. Optimal working dilutions should be determined by the investigator.
Reference Data
Protein Families	Druggable Genome, Protein Kinase, Secreted Protein
Protein Pathways	Cytokine-cytokine receptor interaction, Endocytosis, Focal adhesion

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