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F6307 Sigma

FLT1 (784-end), active, GST tagged human

PRECISIO® Kinase, recombinant, expressed in baculovirus infected Sf9 cells, ≥70% (SDS-PAGE), buffered aqueous glycerol solution

Synonym: VEGFR1



Related Categories Active Kinases, Application Index, Biochemicals and Reagents, Cell Biology, Cell Signaling Enzymes,
recombinant   expressed in baculovirus infected Sf9 cells
grade   PRECISIO® Kinase
assay   ≥70% (SDS-PAGE)
form   buffered aqueous glycerol solution
activity   30-40 nmol/min·mg
mol wt   mol wt ~94 kDa
shipped in   dry ice
storage temp.   −70°C
Gene Information   human ... FLT1(2321)


Physical form

Supplied in 50 mM Tris-HCl, pH 7.5, with 150 mM NaCl, 0.25 mM DTT, 0.1 mM EGTA, 0.1 mM EDTA, 0.1 mM PMSF, and 25% glycerol.

Biochem/physiol Actions

FLT1 (fms-related tyrosine kinase 1) or VEGFR (vascular endothelial growth factor receptor) is implicated in angiogenesis in tumors, which plays a key role in tumorigenesis, invasion and metastasis of tumors, especially the malignant ones. In human circulation, angiogenesis is balanced by soluble FLT1 (sFLT1) and VEGF. An imbalance leads to multiple conditions such as pre-eclampsia. sFLT1 plays an essential role in the angiogenesis of placenta. An overexpression of this protein in placenta is associated with prenatal arsenic exposure and thus, reduced birth weight.

General description

FLT1 (fms-related tyrosine kinase 1) or VEGFR (vascular endothelial growth factor receptor) is one of the receptor tyrosine kinase, which acts as a receptor for VEGF. VEGF is a predominant angiogenesis stimulating factor. FLT1 is a transmembrane receptor. Soluble FLT1 (sFLT1) is an alternatively spliced soluble form of FLT1, expressed by multiple tissues. It acts as a negative regulator of VEGF. It does not contain the cytosolic and transmembrane domains.

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