3ZWC:
reference: The isomerase and hydratase reaction mechanism of the crotonase active site of the multifunctional enzyme (type-1), as deduced from structures of complexes with 3S-hydroxy-acyl-CoA., Kasaragod P, Schmitz W, Kalervo Hiltunen J, Wierenga RK, FEBS J. 2013 Jan 25. doi: 10.1111/febs.12150. PMID: 23351063

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