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Zn atom in an environment with charged (protonated) HIS. This an energy minimization made on UCSF Phantom over a Zinc containing protein (PDBID 2FOU).
 | A protein magnetic resonance study of the protonation of pyridine and some of its methyl derivatives in watery media A protein magnetic resonance study of the protonation of pyridine and some of its methyl derivatives in aqueous media |
