Heteromtoxin (HmTx), a novel heterodimeric phospholipase A2 from Heterometrus laoticus scorpion venom

► Heteromtoxin (HmTx) is a phospholipases A2 enzymes group III from Heterometrus laoticus, in Thailand. ► Mature protein had 131 amino acid residues, 104 of which were for the large subunit and 27 for the small subunit. ► Structure of HmTx is highly similar to Pandinus imperator imperatoxin I (IpTxi) and to Mesobuthus tamulus phospholipase A2.