6BC9:
reference: "To Be or Not to Be" Protonated: Atomic Details of Human Carbonic Anhydrase-Clinical Drug Complexes by Neutron Crystallography and Simulation., Kovalevsky A, Aggarwal M, Velazquez H, Cuneo MJ, Blakeley MP, Weiss KL, Smith JC, Fisher SZ, McKenna R, Structure. 2018 Jan 29. pii: S0969-2126(18)30006-6. doi:, 10.1016/j.str.2018.01.006. PMID: 29429876

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