4AR5: X-Ray Crystallographic Structure Of The Oxidised Form Perdeu Pyrococcus Furiosus Rubredoxin In D2o At 295k (In Quartz Ca To 1.00 Angstrom Resolution.
reference: Near-Atomic Resolution Neutron Crystallography on Perdeuterated Pyrococcus furiosus Rubredoxin: Implication of Hydronium Ions and Protonation State Equilibria in Redox Changes., Cuypers MG, Mason SA, Blakeley MP, Mitchell EP, Haertlein M, Forsyth VT, Angew Chem Int Ed Engl. 2013 Jan 14;52(3):1022-5. doi: 10.1002/anie.201207071., Epub 2012 Dec 6. PMID: 23225503

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