B7MAM1 · SECA_ECO45
- ProteinProtein translocase subunit SecA
- GenesecA
- StatusUniProtKB reviewed (Swiss-Prot)
- Amino acids901 (go to sequence)
- Protein existenceInferred from homology
- Annotation score3/5
Function
function
Part of the Sec protein translocase complex. Interacts with the SecYEG preprotein conducting channel. Has a central role in coupling the hydrolysis of ATP to the transfer of proteins into and across the cell membrane, serving both as a receptor for the preprotein-SecB complex and as an ATP-driven molecular motor driving the stepwise translocation of polypeptide chains across the membrane.
Catalytic activity
Cofactor
Note: May bind 1 zinc ion per subunit.
Features
Showing features for binding site.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Binding site | 87 | ATP (UniProtKB | ChEBI) | ||||
Sequence: Q | ||||||
Binding site | 105-109 | ATP (UniProtKB | ChEBI) | ||||
Sequence: GEGKT | ||||||
Binding site | 512 | ATP (UniProtKB | ChEBI) | ||||
Sequence: D | ||||||
Binding site | 885 | Zn2+ (UniProtKB | ChEBI) | ||||
Sequence: C | ||||||
Binding site | 887 | Zn2+ (UniProtKB | ChEBI) | ||||
Sequence: C | ||||||
Binding site | 896 | Zn2+ (UniProtKB | ChEBI) | ||||
Sequence: C | ||||||
Binding site | 897 | Zn2+ (UniProtKB | ChEBI) | ||||
Sequence: H |
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | cell envelope Sec protein transport complex | |
Cellular Component | cytosol | |
Cellular Component | plasma membrane | |
Molecular Function | ATP binding | |
Molecular Function | metal ion binding | |
Molecular Function | protein-exporting ATPase activity | |
Biological Process | intracellular protein transmembrane transport | |
Biological Process | protein import | |
Biological Process | protein targeting | |
Biological Process | protein transport by the Sec complex |
Keywords
- Molecular function
- Biological process
- Ligand
Enzyme and pathway databases
Names & Taxonomy
Protein names
- Recommended nameProtein translocase subunit SecA
- EC number
Gene names
Organism names
- Strain
- Taxonomic lineageBacteria > Pseudomonadota > Gammaproteobacteria > Enterobacterales > Enterobacteriaceae > Escherichia
Accessions
- Primary accessionB7MAM1
Proteomes
Subcellular Location
UniProt Annotation
GO Annotation
Cell inner membrane ; Peripheral membrane protein
Note: Distribution is 50-50.
Keywords
- Cellular component
PTM/Processing
Features
Showing features for chain.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Chain | PRO_1000145005 | 1-901 | Protein translocase subunit SecA | |||
Sequence: MLIKLLTKVFGSRNDRTLRRMRKVVNIINAMEPEMEKLSDEELKGKTAEFRARLEKGEVLENLIPEAFAVVREASKRVFGMRHFDVQLLGGMVLNERCIAEMRTGEGKTLTATLPAYLNALTGKGVHVVTVNDYLAQRDAENNRPLFEFLGLTVGINLPGMPAPAKREAYAADITYGTNNEYGFDYLRDNMAFSPEERVQRKLHYALVDEVDSILIDEARTPLIISGPAEDSSEMYKRVNKIIPHLIRQEKEDSETFQGEGHFSVDEKSRQVNLTERGLVLIEELLVKEGIMDEGESLYSPANIMLMHHVTAALRAHALFTRDVDYIVKDGEVIIVDEHTGRTMQGRRWSDGLHQAVEAKEGVQIQNENQTLASITFQNYFRLYEKLAGMTGTADTEAFEFSSIYKLDTVVVPTNRPMIRKDLPDLVYMTEAEKIQAIIEDIKERTAKGQPVLVGTISIEKSELVSNELTKAGIKHNVLNAKFHANEAAIVAQAGYPAAVTIATNMAGRGTDIVLGGSWQAEVAALENPTAEQIEKIKADWQVRHDAVLAAGGLHIIGTERHESRRIDNQLRGRSGRQGDAGSSRFYLSMEDALMRIFASDRVSGMMRKLGMKPGEAIEHPWVTKAIANAQRKVESRNFDIRKQLLEYDDVANDQRRAIYSQRNELLDVSDVSETINSIREDVFKATIDAYIPPQSLEEMWDIPGLQERLKNDFDLDLPIAEWLDKEPELHEETLRERILAQSIEVYQRKEEVVGAEMMRHFEKGVMLQTLDSLWKEHLAAMDYLRQGIHLRGYAQKDPKQEYKRESFSMFAAMLESLKYEVISTLSKVQVRMPEEVEELEQQRRMEAERLAQMQQLSYQDDDSAAAAALAAQTGERKVGRNDPCPCGSGKKYKQCHGRLQ |
Expression
Induction
Repressed under conditions of excess protein secretion capacity and derepressed when protein secretion becomes limiting. This is regulated by SecM.
Interaction
Subunit
Monomer and homodimer. Part of the essential Sec protein translocation apparatus which comprises SecA, SecYEG and auxiliary proteins SecDF-YajC and YidC.
Structure
Family & Domains
Features
Showing features for region.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Region | 868-901 | Disordered | ||||
Sequence: AALAAQTGERKVGRNDPCPCGSGKKYKQCHGRLQ |
Sequence similarities
Belongs to the SecA family.
Phylogenomic databases
Family and domain databases
Sequence
- Sequence statusComplete
- Length901
- Mass (Da)101,991
- Last updated2009-02-10 v1
- ChecksumA911205CCDA1837D
Keywords
- Technical term
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
CU928161 EMBL· GenBank· DDBJ | CAR01467.1 EMBL· GenBank· DDBJ | Genomic DNA |