Vascular endothelial growth factor receptor tyrosine kinase domain (VEGFR TK domain)

The **vascular endothelial growth factor receptor (VEGFR) tyrosine kinase domain** is an intracellular catalytic region present in VEGFR-1, VEGFR-2, and VEGFR-3, which are receptor tyrosine kinases crucial for mediating vascular endothelial growth factor (VEGF)-driven signaling. This domain typically exists in a ‘split’ configuration, with N- and C-terminal lobes separated by an insert sequence, and contains key motifs—such as a glycine-rich ATP-binding loop, a catalytic HRD motif, and an activation loop with a DFG motif—that regulate kinase activity. The kinase domain is essential for initiating downstream signaling that controls endothelial cell proliferation, survival, migration, and blood vessel formation. Inhibitors targeting this domain block ATP binding and receptor autophosphorylation, providing a key strategy in anti-angiogenic therapies for cancers and other diseases characterized by pathological angiogenesis[1][2][3]. Note: To reference a true canonical target, use the full receptor such as "Vascular endothelial growth factor receptor 2 (VEGFR-2, KDR)" for structured ontologies. The tyrosine kinase domain itself is an essential region but not separately drugged outside the context of the full protein.

Other names

VEGFR TK domainVEGF receptor tyrosine kinase domainVEGFR-2 kinase domain (if context clarifies)

Inhibition of ATP binding at the kinase domain to block receptor phosphorylation and downstream signaling Allosteric inhibition of kinase activity Prevention of receptor activation and dimerization