5D51:
reference: Krypton Derivatization of an O2 -Tolerant Membrane-Bound [NiFe] Hydrogenase Reveals a Hydrophobic Tunnel Network for Gas Transport., Kalms J, Schmidt A, Frielingsdorf S, van der Linden P, von Stetten D, Lenz O, Carpentier P, Scheerer P, Angew Chem Int Ed Engl. 2016 Apr 25;55(18):5586-90. doi: 10.1002/anie.201508976. , Epub 2016 Feb 23. PMID: 26913499

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