1.7.2.4: nitrous-oxide reductase

This is an abbreviated version!
For detailed information about nitrous-oxide reductase, go to the full flat file.

Word Map on EC 1.7.2.4

Reaction

nitrogen
+
H2O
+ 2 ferricytochrome c =
Nitrous oxide
+ 2 ferrocytochrome c + 2 H+

Synonyms

HdN2OR, McoP, MhN2OR, multicopper oxidase, N(2)OR, N2O reductase, N2OR, nitrous oxide reductase, NosZ, PpN2OR, PsN2OR, Sden_2219, SdN2OR, Z-type N2OR

ECTree

     1 Oxidoreductases
         1.7 Acting on other nitrogenous compounds as donors
             1.7.2 With a cytochrome as acceptor
                1.7.2.4 nitrous-oxide reductase

Expression

Expression on EC 1.7.2.4 - nitrous-oxide reductase

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EXPRESSION
ORGANISM
UNIPROT
LITERATURE
aerobically raised cells of Paracoccus denitrificans induce transcription of nosZ immediately after being transferred to intermediate O2 concentration (7 vol% O2 in headspace) in the presence of NO3- resulting in increased catalytically active enzyme levels
-
expression analysis of key enzymes involved in denitrification during agricultural waste composting process, encoded by genes nirS, nirK, and NoaZ, overview
-
in Bradyrhizobium diazoefficiens, maximal expression of the nitrous oxide reductase gene nosZ requires oxygen limitation and the presence of a nitrogen oxide. In contrast to nosRZD coding region, nosR-leader transcript level was not affected by nasS or nasT mutations under aerobic or denitrifying conditions respectively. Mapping of two transcription start sites of nosR and identification of two potential hairpins, H1 and H2, within the 5'-leader of nosR transcripts, the two-hairpin RNA structure acts for transcription termination upstream of nosR and the binding of NasT to H1 facilitates read-through transcription to induce nos expression
the putative transcription antiterminator NasT is a positive regulator of nosZ, mechanism overview. But in the absence of nitrate, NasT is counteracted by the nitrate sensor NasS. NasT-mediated mechanism of nosRZDFYLX gene cluster expression, overview. NasT interacts specifically with nosR 5'-leader RNA and that the H1 hairpin contains the binding site critical for such interaction. The terminal loop of the recognition hairpin and the top base pair adjacent to it are important for the interaction with ANTAR proteins
the putative transcription antiterminator NasT is a positive regulator of nosZ; but in the absence of nitrate, NasT is counteracted by the nitrate sensor NasS