Plasminogen Activator Inhibitor 1 (PAI1) Antibody – Rabbit Polyclonal

This gene encodes a member of the serine proteinase inhibitor (serpin) superfamily. This member is the principal inhibitor of tissue plasminogen activator (tPA) and urokinase (uPA), and hence is an inhibitor of fibrinolysis. Defects in this gene are the cause of plasminogen activator inhibitor-1 deficiency (PAI-1 deficiency), and high concentrations of the gene product are associated with thrombophilia. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2009]

SERPINE1: a secreted protein that acts as 'bait' for tissue plasminogen activator, urokinase, and protein C. Its rapid interaction with TPA may function as a major control point in the regulation of fibrinolysis. Belongs to the serpin family. Interacts with VTN. Binds LRP1B; binding is followed by internalization and degradation. Plasma levels of PAI-1 and VCAM-1 together may be useful in predicting post-operative recurrence in patients with colorectal cancer.

Protein type: Secreted; Secreted, signal peptide; Motility/polarity/chemotaxis

Chromosomal Location of Human Ortholog: 7q22.1

Cellular Component: extracellular matrix; extracellular region; extracellular space; plasma membrane

Molecular Function: protease binding; protein binding; receptor binding; serine-type endopeptidase inhibitor activity

Biological Process: angiogenesis; blood coagulation; chronological cell aging; circadian rhythm; defense response to Gram-negative bacterium; extracellular matrix organization and biogenesis; fibrinolysis; gene expression; negative regulation of blood coagulation; negative regulation of cell adhesion mediated by integrin; negative regulation of cell migration; negative regulation of fibrinolysis; negative regulation of smooth muscle cell migration; placenta development; platelet activation; platelet degranulation; positive regulation of angiogenesis; positive regulation of blood coagulation; positive regulation of inflammatory response; positive regulation of interleukin-8 production; positive regulation of receptor-mediated endocytosis; positive regulation of transcription from RNA polymerase II promoter; regulation of cell proliferation; regulation of receptor activity; transcription initiation from RNA polymerase II promoter; transcription, DNA-dependent; transforming growth factor beta receptor signaling pathway

Disease: Plasminogen Activator Inhibitor-1 Deficiency