A0A085AD77 · A0A085AD77_9ENTR
- ProteinNa(+)-translocating NADH-quinone reductase subunit B
- GenenqrB
- StatusUniProtKB unreviewed (TrEMBL)
- Amino acids412 (go to sequence)
- Protein existenceInferred from homology
- Annotation score3/5
Function
function
NQR complex catalyzes the reduction of ubiquinone-1 to ubiquinol by two successive reactions, coupled with the transport of Na+ ions from the cytoplasm to the periplasm. NqrA to NqrE are probably involved in the second step, the conversion of ubisemiquinone to ubiquinol.
Catalytic activity
- a ubiquinone + n Na+(in) + NADH + H+ = a ubiquinol + n Na+(out) + NAD+
a ubiquinone RHEA-COMP:9565 + n Na+ (in)CHEBI:29101+ CHEBI:57945 + CHEBI:15378 = a ubiquinol RHEA-COMP:9566 + n Na+ (out)CHEBI:29101+ CHEBI:57540
Cofactor
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | plasma membrane | |
Molecular Function | FMN binding | |
Molecular Function | oxidoreductase activity, acting on NAD(P)H, quinone or similar compound as acceptor | |
Biological Process | respiratory electron transport chain | |
Biological Process | sodium ion transport | |
Biological Process | transmembrane transport |
Keywords
- Molecular function
- Biological process
- Ligand
Enzyme and pathway databases
Names & Taxonomy
Protein names
- Recommended nameNa(+)-translocating NADH-quinone reductase subunit B
- EC number
- Short namesNa(+)-NQR subunit B ; Na(+)-translocating NQR subunit B
- Alternative names
Gene names
Organism names
- Strain
- Taxonomic lineageBacteria > Pseudomonadota > Gammaproteobacteria > Enterobacterales > Enterobacteriaceae > Trabulsiella
Accessions
- Primary accessionA0A085AD77
Proteomes
Subcellular Location
UniProt Annotation
GO Annotation
Cell membrane ; Multi-pass membrane protein
Features
Showing features for transmembrane.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Transmembrane | 56-73 | Helical | |||
Transmembrane | 126-146 | Helical | |||
Transmembrane | 158-177 | Helical | |||
Transmembrane | 268-290 | Helical | |||
Transmembrane | 297-315 | Helical | |||
Transmembrane | 327-345 | Helical | |||
Transmembrane | 357-375 | Helical | |||
Transmembrane | 381-401 | Helical | |||
Keywords
- Cellular component
PTM/Processing
Features
Showing features for modified residue.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Modified residue | 236 | FMN phosphoryl threonine | |||
Keywords
- PTM
Interaction
Subunit
Composed of six subunits; NqrA, NqrB, NqrC, NqrD, NqrE and NqrF.
Structure
Sequence
- Sequence statusComplete
- Length412
- Mass (Da)45,111
- Last updated2014-10-29 v1
- MD5 ChecksumB94340CF4EB2CA2E1E7BB300FD697D8E
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
JMTB01000057 EMBL· GenBank· DDBJ | KFC08172.1 EMBL· GenBank· DDBJ | Genomic DNA |