ENTRY       EC 1.7.2.1
NAME        Nitrite reductase (cytochrome)
CLASS       Oxidoreductases
            Acting on other nitrogenous compounds as donors
            With a cytochrome as acceptor
SYSNAME     Nitric-oxide:ferricytochrome-c oxidoreductase
REACTION    Nitric oxide + H2O + 2 Ferricytochrome c =
            Nitrite + 2 Ferrocytochrome c;
            Nitric oxide + H2O + 2 Oxidized azurin = Nitrite + 
            2 Reduced azurin
SUBSTRATE   Nitric oxide
            H2O
            Ferricytochrome c
            Oxidized azurin
PRODUCT     Nitrite
            Ferrocytochrome c
            Reduced azurin
COFACTOR    Copper
COMMENT     A copper protein. Cytochrome c-552 or cytochrome c-553 from
            Pseudomonas denitrificans acts as acceptor.  There are two types
            of enzymes; blue and green enzymes.
PATHWAY     PATH: MAP00910  Nitrogen metabolism
DBLINKS     University of Geneva ENZYME DATA BANK: 1.7.2.1
            WIT (What Is There) Metabolic Reconstruction: 1.7.2.1
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