1MOO:
reference: The refined atomic structure of carbonic anhydrase II at 1.05 A resolution: implications of chemical rescue of proton transfer., Duda D, Govindasamy L, Agbandje-McKenna M, Tu C, Silverman DN, McKenna R, Acta Crystallogr D Biol Crystallogr 2003 Jan 1;59(Pt 1):93-104. PMID: 12499545

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