Angiopoietin 2 (ANGPT2) Antibody – Polyclonal

The protein encoded by this gene is an antagonist of angiopoietin 1 (ANGPT1) and endothelial TEK tyrosine kinase (TIE-2, TEK). The encoded protein disrupts the vascular remodeling ability of ANGPT1 and may induce endothelial cell apoptosis. Three transcript variants encoding three different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ANGPT2: Binds to TEK/TIE2, competing for the ANGPT1 binding site, and modulating ANGPT1 signaling. Can induce tyrosine phosphorylation of TEK/TIE2 in the absence of ANGPT1. In the absence of angiogenic inducers, such as VEGF, ANGPT2-mediated loosening of cell-matrix contacts may induce endothelial cell apoptosis with consequent vascular regression. In concert with VEGF, it may facilitate endothelial cell migration and proliferation, thus serving as a permissive angiogenic signal. Interacts with TEK/TIE2, competing for the same binding site as ANGPT1. 3 isoforms of the human protein are produced by alternative splicing.

Protein type: Secreted; Secreted, signal peptide

Chromosomal Location of Human Ortholog: 8p23.1

Cellular Component: cell projection; extracellular region; extracellular space; nucleus; plasma membrane

Molecular Function: metal ion binding; protein binding; receptor binding; receptor tyrosine kinase binding

Biological Process: angiogenesis; germ cell development; leukocyte migration; maternal process involved in pregnancy; negative regulation of angiogenesis; negative regulation of blood vessel endothelial cell migration; negative regulation of positive chemotaxis; organ regeneration; positive regulation of angiogenesis; response to activity; response to glucose stimulus; response to hypoxia; response to mechanical stimulus; response to organic cyclic substance; response to radiation; signal transduction; Tie receptor signaling pathway