ID   1.12.2.1
DE   Cytochrome-c3 hydrogenase.
AN   Cytochrome c3 reductase.
AN   Cytochrome hydrogenase.
AN   H(2):ferricytochrome c3 oxidoreductase.
CA   2 H(2) + ferricytochrome c3 = 4 H(+) + ferrocytochrome c3.
CF   Iron-sulfur; Nickel.
CC   -!- Some forms of the enzyme contain nickel ([NiFe]-hydrogenases) and,
CC       of these, some contain selenocysteine ([NiFeSe]-hydrogenases).
CC   -!- Methylene blue and other acceptors can also be reduced.
DR   P80509, HC3L_THIFE ;  P80510, HC3S_THIFE ;  P18188, PHNL_DESFR ;
DR   P12944, PHNL_DESGI ;  P21852, PHNL_DESVM ;  Q06173, PHNS1_DESVH;
DR   P61429, PHNS2_DESVH;  P13061, PHNS_DESDA ;  P18187, PHNS_DESFR ;
DR   P12943, PHNS_DESGI ;  P13062, PHNS_DESMU ;  P21853, PHNS_DESVM ;
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