Five increasingly anionic phospholipases A2 (Pa1-Pa5) exist in the venom of the lizard Heloderma suspectum. We recently elucidated the sequence of Pa5, the most abundant and most active variant, towards emulsified phosphatidylcholines. Here we present the primary structures of Pa2, Pa3 (subvariants a and b) and Pa4, based on Edman degradation of tryptic… (More)
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