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Literature summary for 1.7.2.1 extracted from

  • Silvestrini, M.C.; Falcinelli, S.; Ciabatti, I.; Cutruzzola, F.; Brunori, M.
    Pseudomonas aeruginosa nitrite reductase (or cytochrome oxidase): an overview (1994), Biochimie, 76, 641-654.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
Subtilisin species of 48000 Da which contains the d1 but not the c heme Pseudomonas aeruginosa

Cloned(Commentary)

Cloned (Comment) Organism
epression in Pseudomonas putida Pseudomonas aeruginosa

General Stability

General Stability Organism
urea, 4 M, 9% of initial activity, 6 M, no dissociation into subunits but irreversible inactivation Pseudomonas aeruginosa

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.028
-
O2
-
Pseudomonas aeruginosa
0.0305
-
ferricytochrome c succinylated monomeric enzyme Pseudomonas aeruginosa
0.053
-
NO2-
-
Pseudomonas aeruginosa

Localization

Localization Comment Organism GeneOntology No. Textmining
periplasm
-
Paracoccus denitrificans
-
-
periplasm
-
Pseudomonas aeruginosa
-
-

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
60204
-
2 * 60204, deduced from amino acid sequence Pseudomonas aeruginosa

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
ferrocytochrome c-551 + O2 Pseudomonas aeruginosa
-
ferricytochrome c-551 + H2O
-
?
NO2- + ferrocytochrome c Pseudomonas aeruginosa probably most dominant activity in vivo NO + ferricytochrome c
-
?
reduced azurin + O2 Pseudomonas aeruginosa not known whether azurin donates electrons in vivo in parallel or sequentially to cytochrome c551 oxidized azurin + H2O
-
?

Organism

Organism UniProt Comment Textmining
Alcaligenes faecalis
-
-
-
Halomonas halodenitrificans
-
-
-
Paracoccus denitrificans
-
-
-
Paracoccus pantotrophus
-
-
-
Pseudomonas aeruginosa
-
-
-
Pseudomonas stutzeri
-
-
-
Thiobacillus denitrificans
-
-
-

Purification (Commentary)

Purification (Comment) Organism
-
Alcaligenes faecalis
-
Pseudomonas stutzeri
-
Paracoccus pantotrophus
-
Halomonas halodenitrificans
monomeric enzyme prepared by controlled succinylation of the native dimer Pseudomonas aeruginosa
recombinant enzyme, contains only the c heme Pseudomonas aeruginosa

Reaction

Reaction Comment Organism Reaction ID
nitric oxide + H2O + ferricytochrome c = nitrite + ferrocytochrome c + 2 H+ proposed reaction mechanism Pseudomonas aeruginosa

Renatured (Commentary)

Renatured (Comment) Organism
-
Pseudomonas aeruginosa

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
ferrocytochrome c-551 + NO2-
-
Paracoccus denitrificans NO + ferricytochrome c-551
-
?
ferrocytochrome c-551 + NO2-
-
Pseudomonas aeruginosa NO + ferricytochrome c-551
-
?
ferrocytochrome c-551 + O2
-
Paracoccus denitrificans H2O + ferricytochrome c-551
-
?
ferrocytochrome c-551 + O2 inactive with eukaryotic cytochromes c Pseudomonas aeruginosa H2O + ferricytochrome c-551
-
?
ferrocytochrome c-551 + O2
-
Pseudomonas aeruginosa ferricytochrome c-551 + H2O
-
?
nitric oxide + H2O + ferricytochrome c
-
Pseudomonas aeruginosa nitrite + ferrocytochrome c + H+
-
r
NO2- + ferrocytochrome c probably most dominant activity in vivo Pseudomonas aeruginosa NO + ferricytochrome c
-
?
reduced azurin + O2 not known whether azurin donates electrons in vivo in parallel or sequentially to cytochrome c551 Pseudomonas aeruginosa oxidized azurin + H2O
-
?

Subunits

Subunits Comment Organism
dimer
-
Pseudomonas stutzeri
dimer
-
Thiobacillus denitrificans
dimer 2 * 60204, deduced from amino acid sequence Pseudomonas aeruginosa

Turnover Number [1/s]

Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
1.33
-
ferricytochrome c succinylated monomeric enzyme Pseudomonas aeruginosa

Cofactor

Cofactor Comment Organism Structure
heme c
-
Pseudomonas stutzeri
heme c c heme is the electron accepting pole of the enzyme Pseudomonas aeruginosa