Q9LCJ4 · NQRF_PSEHA
- ProteinNa(+)-translocating NADH-quinone reductase subunit F
- GenenqrF
- StatusUniProtKB reviewed (Swiss-Prot)
- Amino acids303 (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. The first step is catalyzed by NqrF, which accepts electrons from NADH and reduces ubiquinone-1 to ubisemiquinone by a one-electron transfer pathway.
Catalytic activity
- a ubiquinone + H+ + n Na+(in) + NADH = a ubiquinol + n Na+(out) + NAD+
a ubiquinone RHEA-COMP:9565 + CHEBI:15378 + n Na+ (in)CHEBI:29101+ CHEBI:57945 = a ubiquinol RHEA-COMP:9566 + n Na+ (out)CHEBI:29101+ CHEBI:57540
Cofactor
Protein has several cofactor binding sites:
Note: Binds 1 [2Fe-2S] cluster.
Features
Showing features for binding site.
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | plasma membrane | |
Molecular Function | 2 iron, 2 sulfur cluster binding | |
Molecular Function | metal ion binding | |
Molecular Function | oxidoreductase activity, acting on NAD(P)H, quinone or similar compound as acceptor | |
Biological Process | sodium ion transport |
Keywords
- Molecular function
- Biological process
- Ligand
Enzyme and pathway databases
Names & Taxonomy
Protein names
- Recommended nameNa(+)-translocating NADH-quinone reductase subunit F
- EC number
- Short namesNa(+)-NQR subunit F; Na(+)-translocating NQR subunit F
- Alternative names
Gene names
Organism names
- Taxonomic lineageBacteria > Pseudomonadota > Gammaproteobacteria > Alteromonadales > Pseudoalteromonadaceae > Pseudoalteromonas
Accessions
- Primary accessionQ9LCJ4
Subcellular Location
PTM/Processing
Features
Showing features for chain.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Chain | PRO_0000074487 | 1-303 | Na+-translocating NADH-quinone reductase subunit F | |||
Sequence: GGSCGQCRVHIKEGGGDILPTELDHISKGEAREGCRLACQVNVKNDMEIELEESIFGVKKWDCEVISNDNKATFIKELKLQIPDGESVPFRAGGYIQIEAPAHHVKYADFDIPEEYRGDWNHFGFFDLESKVDEETIRAYSMANYPEEEGIIMLNVRIATPPPRNLSLPCGKMSSYIWSLKEGDKVTISGPFGEFFAKDTDAEMVFVGGGAGMAPMRSHIFDQLKRLNSKRKISFWYGARSKREMFYVEDFDGLAEQNENFVWHTALSDPQPEDNWEGYTGFIHNVLFENYLKDHEAPEDCEY |
Interaction
Subunit
Composed of six subunits; NqrA, NqrB, NqrC, NqrD, NqrE and NqrF.
Structure
Family & Domains
Features
Showing features for domain, region.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Domain | 1-55 | 2Fe-2S ferredoxin-type | ||||
Sequence: GGSCGQCRVHIKEGGGDILPTELDHISKGEAREGCRLACQVNVKNDMEIELEESI | ||||||
Domain | 58-198 | FAD-binding FR-type | ||||
Sequence: VKKWDCEVISNDNKATFIKELKLQIPDGESVPFRAGGYIQIEAPAHHVKYADFDIPEEYRGDWNHFGFFDLESKVDEETIRAYSMANYPEEEGIIMLNVRIATPPPRNLSLPCGKMSSYIWSLKEGDKVTISGPFGEFFAK | ||||||
Region | 201-303 | Catalytic | ||||
Sequence: DAEMVFVGGGAGMAPMRSHIFDQLKRLNSKRKISFWYGARSKREMFYVEDFDGLAEQNENFVWHTALSDPQPEDNWEGYTGFIHNVLFENYLKDHEAPEDCEY |
Sequence similarities
Belongs to the NqrF family.
Phylogenomic databases
Family and domain databases
Sequence
- Sequence statusFragment
- Length303
- Mass (Da)34,463
- Last updated2000-10-01 v1
- ChecksumBA585741D1F86E2A
Features
Showing features for non-terminal residue.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Non-terminal residue | 1 | |||||
Sequence: G | ||||||
Non-terminal residue | 303 | |||||
Sequence: Y |