Aeromonas extracellular serine protease

UniProtKB accession:  Q9L5A4

Grouped By:  Matching UniProtKB accession

UniProtKB description:  Exhibits serine protease activity (PubMed:11092244, PubMed:12153115, PubMed:16487335, PubMed:18067862, PubMed:18462393, PubMed:19654332). Preferentially cleaves the peptide bond following two basic residues, one of which is Lys, but does not recognize the bond following a single basic residue (PubMed:16487335). Probable potent virulence factor that cleaves various host plasma proteins, including prekallikrein, prothrombin and fibrinogen (PubMed:16487335, PubMed:17142774, PubMed:18067862, PubMed:18462393, PubMed:19654332). ASP induces vascular leakage and reduction in blood pressure by activating the host plasma kallikrein/kinin system (PubMed:12153115, PubMed:16487335, PubMed:17142774). It affects the host coagulation system during infection through activation of prothrombin to alpha-thrombin and degradation of fibrinogen, which impairs plasma clottability (PubMed:18067862, PubMed:18462393). It also hydrolyzes the complement component C5, releasing the C5a anaphylatoxin, which causes the formation of pus and edema (PubMed:18714034). In addition, degrades its external chaperone ORF2 after the secretion of the ASP-ORF2 complex (PubMed:25784551).