1GTB:
reference: Crystal structures of a schistosomal drug and vaccine target: glutathione S-transferase from Schistosoma japonica and its complex with the leading antischistosomal drug praziquantel., McTigue MA, Williams DR, Tainer JA, J Mol Biol 1995 Feb 10;246(1):21-7. PMID: 7853399

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