FLT 4 protein; FLT 4; Tyrosine-protein kinase receptor FLT4 protein; FLT4; FLT-4 protein; Vascular endothelial growth factor receptor 3 protein; FLT-4; Fms-like tyrosine kinase 4 protein

For Research Use Only. Not for use in diagnostic procedures.

Human

> 90% pure
FLT4 protein was purified using a a proprietary chromatographic technique.

Supplied in lyophilized form with no additives

Store at 4 degree C for short term storage. Aliquot and store at -20 degree C for long term storage. Avoid repeated freeze/thaw cycles.

Small volumes of FLT4 recombinant protein vial(s) may occasionally become entrapped in the seal of the product vial during shipment and storage. If necessary, briefly centrifuge the vial on a tabletop centrifuge to dislodge any liquid in the container`s cap. Certain products may require to ship with dry ice and additional dry ice fee may apply.

Purified recombinant Human FLT4 protein

Differentiation & Development

120 kDa

fms-related tyrosine kinase 4

vascular endothelial growth factor receptor 3

Vascular endothelial growth factor receptor 3

VEGFR3; VEGFR-3; FLT-4??[Similar Products]

VGFR3_HUMAN

This gene encodes a tyrosine kinase receptor for vascular endothelial growth factors C and D. The protein is thought to be involved in lymphangiogenesis and maintenance of the lymphatic endothelium. Mutations in this gene cause hereditary lymphedema type IA. [provided by RefSeq, Jul 2008]

VEGFR3: Tyrosine-protein kinase that acts as a cell-surface receptor for VEGFC and VEGFD, and plays an essential role in ***** lymphangiogenesis and in the development of the vascular network and the cardiovascular system during embryonic development. Promotes proliferation, survival and migration of endothelial cells, and regulates angiogenic sprouting. Signaling by activated FLT4 leads to enhanced production of VEGFC, and to a lesser degree VEGFA, thereby creating a positive feedback loop that enhances FLT4 signaling. Modulates KDR signaling by forming heterodimers. The secreted isoform 3 may function as a decoy receptor for VEGFC and/or VEGFD and play an important role as a negative regulator of VEGFC-mediated lymphangiogenesis and angiogenesis. Binding of vascular growth factors to isoform 1 or isoform 2 leads to the activation of several signaling cascades; isoform 2 seems to be less efficient in signal transduction, because it has a truncated C-terminus and therefore lacks several phosphorylation sites. Mediates activation of the MAPK1/ERK2, MAPK3/ERK1 signaling pathway, of MAPK8 and the JUN signaling pathway, and of the AKT1 signaling pathway. Phosphorylates SHC1. Mediates phosphorylation of PIK3R1, the regulatory subunit of phosphatidylinositol 3- kinase. Promotes phosphorylation of MAPK8 at 'Thr-183' and 'Tyr- 185', and of AKT1 at 'Ser-473'. Interacts with VEGFC and VEGFD. Monomer in the absence of bound VEGFC or VEGFD. Homodimer in the presence of bound VEGFC or VEGFD. Can also form a heterodimer with KDR. Interacts with PTPN14; the interaction is enhanced by stimulation with VEGFC. Interacts with CRK, GRB2, PTK2/FAK1, SHC1, PIK3R1 and PTPN11/SHP- 2. Identified in a complex with SRC and ITGB1. Detected in endothelial cells. Widely expressed. Detected in fetal spleen, lung and brain. Detected in ***** liver, muscle, thymus, placenta, lung, testis, ovary, prostate, heart, and kidney. Present in an inactive conformation in the absence of bound ligand. Binding of VEGFC or VEGFD leads to dimerization and activation by autophosphorylation on tyrosine residues. Inhibited by MAZ51. Belongs to the protein kinase superfamily. Tyr protein kinase family. CSF-1/PDGF receptor subfamily. 3 isoforms of the human protein are produced by alternative splicing.

Protein type: Kinase, protein; Protein kinase, tyrosine (receptor); Membrane protein, integral; EC 2.7.10.1; Protein kinase, TK; TK group; VEGFR family

Chromosomal Location of Human Ortholog: 5q35.3

Cellular Component: integral to plasma membrane; cytoplasm; extracellular region; plasma membrane; nucleus; receptor complex

Molecular Function: vascular endothelial growth factor receptor activity; protein binding; growth factor binding; transmembrane receptor protein tyrosine kinase activity; protein phosphatase binding; ATP binding

Biological Process: peptidyl-tyrosine phosphorylation; vasculature development; positive regulation of MAPKKK cascade; protein amino acid autophosphorylation; positive regulation of cell proliferation; lymphangiogenesis; blood vessel morphogenesis; positive regulation of JNK cascade; positive regulation of endothelial cell proliferation; positive regulation of protein amino acid phosphorylation; sprouting angiogenesis; lymph vessel development; vascular endothelial growth factor receptor signaling pathway; transmembrane receptor protein tyrosine kinase signaling pathway; negative regulation of apoptosis

Disease: Hemangioma, Capillary Infantile; Lymphedema, Hereditary, Ia

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