1ZSA: Carbonic Anhydrase II Mutant E117q, Apo Form
reference: Reversal of the hydrogen bond to zinc ligand histidine-119 dramatically diminishes catalysis and enhances metal equilibration kinetics in carbonic anhydrase II., Huang, CC, Lesburg CA, Kiefer LL, Fierke CA, Christianson DW, Biochemistry 1996 Mar 19;35(11):3439-46. PMID: 8639494

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