Inhibits the enzymatic activity of basic phospholipase A2 (PubMed:10698689). Specifically neutralizes PLA2, myotoxic, edema-forming, cytolytic, and anti-coagulant activities, as well as intracerebral lethal effect of the basic myotoxin I from the same venom (AC P0DQP6), crotoxin heterodimer and crotoxin subunit B alone (PubMed:10698689). Does not block the enzymatic activity of crude acidic PLA2 fractions from the same venom (PubMed:10698689). Homomer of 110 kDa composed of 20-25-kDa subunits. Secreted in blood plasma. Expressed by the liver. N-glycosylated. The glycosidic chain may contain superficial sialic acid residues. Belongs to the CNF-like-inhibitor family.