A0A1A5CZS6 · A0A1A5CZS6_9PSED
- ProteinNitrous-oxide reductase
- GenenosZ
- StatusUniProtKB unreviewed (TrEMBL)
- Organism
- Amino acids637 (go to sequence)
- Protein existenceInferred from homology
- Annotation score4/5
Function
function
Nitrous-oxide reductase is part of a bacterial respiratory system which is activated under anaerobic conditions in the presence of nitrate or nitrous oxide.
Catalytic activity
- N2 + 2 Fe(III)-[cytochrome c] + H2O = nitrous oxide + 2 Fe(II)-[cytochrome c] + 2 H+
Cofactor
Protein has several cofactor binding sites:
Note: Binds 2 calcium ions per subunit.
Note: Binds 6 Cu cations per subunit. Each subunit contains 2 copper centers; Cu(A) (binuclear) and Cu(Z) (tetranuclear). Cu(Z) is thought to be the site of nitrous oxide reduction.
Pathway
Nitrogen metabolism; nitrate reduction (denitrification); dinitrogen from nitrate: step 4/4.
Features
Showing features for binding site.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Binding site | 128 | Cu cation Z2 (UniProtKB | ChEBI) | ||||
Sequence: H | ||||||
Binding site | 129 | Cu cation Z3 (UniProtKB | ChEBI) | ||||
Sequence: H | ||||||
Binding site | 177 | Cu cation Z2 (UniProtKB | ChEBI) | ||||
Sequence: H | ||||||
Binding site | 255 | Ca2+ 2 (UniProtKB | ChEBI) | ||||
Sequence: Y | ||||||
Binding site | 258 | Ca2+ 2 (UniProtKB | ChEBI) | ||||
Sequence: E | ||||||
Binding site | 266 | Ca2+ 2 (UniProtKB | ChEBI) | ||||
Sequence: M | ||||||
Binding site | 272 | Ca2+ 2 (UniProtKB | ChEBI) | ||||
Sequence: D | ||||||
Binding site | 323 | Ca2+ 2 (UniProtKB | ChEBI) | ||||
Sequence: N | ||||||
Binding site | 325 | Cu cation Z1 (UniProtKB | ChEBI) | ||||
Sequence: H | ||||||
Binding site | 381 | Cu cation Z1 (UniProtKB | ChEBI) | ||||
Sequence: H | ||||||
Binding site | 432 | Cu cation Z3 (UniProtKB | ChEBI) | ||||
Sequence: H | ||||||
Binding site | 453 | Ca2+ 1 (UniProtKB | ChEBI) | ||||
Sequence: K | ||||||
Binding site | 468 | Ca2+ 1 (UniProtKB | ChEBI) | ||||
Sequence: E | ||||||
Binding site | 493 | Cu cation Z4 (UniProtKB | ChEBI) | ||||
Sequence: H | ||||||
Binding site | 582 | Cu cation A1 (UniProtKB | ChEBI) | ||||
Sequence: H | ||||||
Binding site | 617 | Cu cation A2 (UniProtKB | ChEBI) | ||||
Sequence: C | ||||||
Binding site | 617 | Cu cation A1 (UniProtKB | ChEBI) | ||||
Sequence: C | ||||||
Binding site | 619 | Cu cation A2 (UniProtKB | ChEBI) | ||||
Sequence: W | ||||||
Binding site | 621 | Cu cation A2 (UniProtKB | ChEBI) | ||||
Sequence: C | ||||||
Binding site | 621 | Cu cation A1 (UniProtKB | ChEBI) | ||||
Sequence: C | ||||||
Binding site | 625 | Cu cation A2 (UniProtKB | ChEBI) | ||||
Sequence: H | ||||||
Binding site | 628 | Cu cation A1 (UniProtKB | ChEBI) | ||||
Sequence: M |
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | membrane | |
Cellular Component | periplasmic space | |
Molecular Function | calcium ion binding | |
Molecular Function | copper ion binding | |
Molecular Function | cytochrome-c oxidase activity | |
Molecular Function | nitrous-oxide reductase activity | |
Biological Process | denitrification pathway |
Keywords
- Molecular function
- Ligand
Enzyme and pathway databases
Names & Taxonomy
Protein names
- Recommended nameNitrous-oxide reductase
- EC number
- Alternative names
Gene names
Organism names
- Organism
- Strain
- Taxonomic lineageBacteria > Pseudomonadota > Gammaproteobacteria > Pseudomonadales > Pseudomonadaceae > Pseudomonas
Accessions
- Primary accessionA0A1A5CZS6
Proteomes
Subcellular Location
UniProt Annotation
GO Annotation
Features
Showing features for transmembrane.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Transmembrane | 20-43 | Helical | ||||
Sequence: FLGASAVTGAAALVGASALGGAVI |
Keywords
- Cellular component
PTM/Processing
Post-translational modification
Predicted to be exported by the Tat system. The position of the signal peptide cleavage has not been experimentally proven.
Interaction
Subunit
Homodimer.
Structure
Family & Domains
Features
Showing features for domain, region.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Domain | 538-637 | Cytochrome oxidase subunit II copper A binding | ||||
Sequence: RDGKQVRVYMTSMAPTYGITEFTVKQGDEVTVTITNLDEIEDVTHGFVMVNHGVSMEISPQQTSSITFVADRPGVHWYYCSWFCHALHMEMVGRMLVEKA | ||||||
Region | 541-637 | COX2-like | ||||
Sequence: KQVRVYMTSMAPTYGITEFTVKQGDEVTVTITNLDEIEDVTHGFVMVNHGVSMEISPQQTSSITFVADRPGVHWYYCSWFCHALHMEMVGRMLVEKA |
Sequence similarities
Belongs to the NosZ family.
In the C-terminal section; belongs to the cytochrome c oxidase subunit 2 family.
Keywords
- Domain
Family and domain databases
Sequence
- Sequence statusComplete
- Length637
- Mass (Da)70,901
- Last updated2016-10-05 v1
- Checksum045AC846682EFE11
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
LZYC01000077 EMBL· GenBank· DDBJ | OBP08489.1 EMBL· GenBank· DDBJ | Genomic DNA |