1JCT:
reference: Evolution of enzymatic activities in the enolase superfamily: identification of the general acid catalyst in the active site of D-glucarate dehydratase from Escherichia coli., Gulick AM, Hubbard BK, Gerlt JA, Rayment I, Biochemistry 2001 Aug 28;40(34):10054-62. PMID: 11513584

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