The toxic phospholipase A of Vipera russelli siamensis venom is composed of 124 residues from 18 kinds of amino acids and lias a molecular weight of 13,883 daltons.

• 福建产圆斑蝰蛇毒毒性磷酯酶A_2分子由18种氨基酸的124个残基组成,由此计算它们的分子量为13,883。