A0A2T5IBJ7 · A0A2T5IBJ7_9PROT
- ProteinNADH-quinone oxidoreductase subunit I
- GenenuoI
- StatusUniProtKB unreviewed (TrEMBL)
- Organism
- Amino acids171 (go to sequence)
- Protein existenceInferred from homology
- Annotation score3/5
Function
function
NDH-1 shuttles electrons from NADH, via FMN and iron-sulfur (Fe-S) centers, to quinones in the respiratory chain. The immediate electron acceptor for the enzyme in this species is believed to be ubiquinone. Couples the redox reaction to proton translocation (for every two electrons transferred, four hydrogen ions are translocated across the cytoplasmic membrane), and thus conserves the redox energy in a proton gradient.
Catalytic activity
- a quinone + NADH + 5 H+(in) = a quinol + NAD+ + 4 H+(out)
CHEBI:132124 + CHEBI:57945 + 5 H+ (in)CHEBI:15378= CHEBI:24646 + CHEBI:57540 + 4 H+ (out)CHEBI:15378
Cofactor
Note: Binds 2 [4Fe-4S] clusters per subunit.
Features
Showing features for binding site.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Binding site | 51 | [4Fe-4S] cluster 1 (UniProtKB | ChEBI) | |||
Binding site | 54 | [4Fe-4S] cluster 1 (UniProtKB | ChEBI) | |||
Binding site | 57 | [4Fe-4S] cluster 1 (UniProtKB | ChEBI) | |||
Binding site | 61 | [4Fe-4S] cluster 2 (UniProtKB | ChEBI) | |||
Binding site | 90 | [4Fe-4S] cluster 2 (UniProtKB | ChEBI) | |||
Binding site | 93 | [4Fe-4S] cluster 2 (UniProtKB | ChEBI) | |||
Binding site | 96 | [4Fe-4S] cluster 2 (UniProtKB | ChEBI) | |||
Binding site | 100 | [4Fe-4S] cluster 1 (UniProtKB | ChEBI) | |||
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | plasma membrane | |
Molecular Function | 4 iron, 4 sulfur cluster binding | |
Molecular Function | iron ion binding | |
Molecular Function | NADH:ubiquinone reductase (non-electrogenic) activity | |
Molecular Function | quinone binding | |
Biological Process | aerobic respiration |
Keywords
- Molecular function
- Ligand
Enzyme and pathway databases
Names & Taxonomy
Protein names
- Recommended nameNADH-quinone oxidoreductase subunit I
- EC number
- Alternative names
Gene names
Organism names
- Organism
- Strain
- Taxonomic lineageBacteria > Pseudomonadota > Betaproteobacteria > Nitrosomonadales > Nitrosomonadaceae > Nitrosospira
Accessions
- Primary accessionA0A2T5IBJ7
Proteomes
Subcellular Location
UniProt Annotation
GO Annotation
Cell membrane ; Peripheral membrane protein
Keywords
- Cellular component
PTM/Processing
Keywords
- PTM
Interaction
Subunit
NDH-1 is composed of 14 different subunits. Subunits NuoA, H, J, K, L, M, N constitute the membrane sector of the complex.
Structure
Sequence
- Sequence statusComplete
- Length171
- Mass (Da)19,692
- Last updated2018-07-18 v1
- MD5 ChecksumA0A1F74ED7C263BC4F9DEE9DA8421015
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
QAOK01000011 EMBL· GenBank· DDBJ | PTQ81186.1 EMBL· GenBank· DDBJ | Genomic DNA |