Exhibits moderate hydrolytic activities and prefers the anionic micelles (dPPC with deoxycholate) to the zwitterionic micelles (dPPC with Triton X-100). PLA2 catalyzes the calcium-dependent hydrolysis of the 2-acyl groups in 3-sn-phosphoglycerides. a 1,2-diacyl-sn-glycero-3-phosphocholine + H2O = a 1-acyl-sn-glycero-3-phosphocholine + a fatty acid + H(+) Binds 1 Ca(2+) ion. Expressed by the venom gland. Contains 7 disulfide bonds. Belongs to the phospholipase A2 family. Group II subfamily. According to PubMed:12959640, T.stejnegeri was formerly named T.gramineus, implying that this protein is the same as PLA-II from T.gramineus. They have been kept separated, because T.gramineus and T.stejnegeri are considered to be two different species (see http://reptile-database.org).