. "\"Catalysis of the reaction: nitric oxide + H2O + ferricytochrome c = nitrite + ferrocytochrome c + 2 H+.\" [EC:1.7.2.1, MetaCyc:NITRITE-REDUCTASE-CYTOCHROME-RXN]" . . "nitrite reductase (NO-forming) activity" . "cytochrome c-551:O2, NO2+ oxidoreductase activity" . "nitric-oxide:ferricytochrome-c oxidoreductase activity" . "nitrite reductase (cytochrome) activity" . "nitrite reductase (cytochrome; NO-forming) activity" . "nitrite reductase activity" . "EC:1.7.2.1" . "MetaCyc:NITRITE-REDUCTASE-CYTOCHROME-RXN" . "Note that EC:1.7.99.3 was merged into this term." . . "[nitrite reductase (cytochrome)]" . "cd-cytochrome nitrite reductase activity" . "cytochrome c-551:O(2), NO(2)(+) oxidoreductase activity" . "cytochrome cd activity" . "cytochrome cd1 activity" . "methyl viologen-nitrite reductase activity" . "Pseudomonas cytochrome oxidase activity" .