A0A0Q8U9H6 · A0A0Q8U9H6_9ACTN
- ProteinAlanine--tRNA ligase
- GenealaS
- StatusUniProtKB unreviewed (TrEMBL)
- Organism
- Amino acids891 (go to sequence)
- Protein existenceInferred from homology
- Annotation score3/5
Function
function
Catalyzes the attachment of alanine to tRNA(Ala) in a two-step reaction: alanine is first activated by ATP to form Ala-AMP and then transferred to the acceptor end of tRNA(Ala). Also edits incorrectly charged Ser-tRNA(Ala) and Gly-tRNA(Ala) via its editing domain.
Catalytic activity
- tRNA(Ala) + L-alanine + ATP = L-alanyl-tRNA(Ala) + AMP + diphosphate
Cofactor
Note: Binds 1 zinc ion per subunit.
Features
Showing features for binding site.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Binding site | 572 | Zn2+ (UniProtKB | ChEBI) | |||
Binding site | 576 | Zn2+ (UniProtKB | ChEBI) | |||
Binding site | 676 | Zn2+ (UniProtKB | ChEBI) | |||
Binding site | 680 | Zn2+ (UniProtKB | ChEBI) | |||
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | cytosol | |
Molecular Function | alanine-tRNA ligase activity | |
Molecular Function | aminoacyl-tRNA editing activity | |
Molecular Function | ATP binding | |
Molecular Function | tRNA binding | |
Molecular Function | zinc ion binding | |
Biological Process | alanyl-tRNA aminoacylation |
Keywords
- Molecular function
- Biological process
- Ligand
Enzyme and pathway databases
Names & Taxonomy
Protein names
- Recommended nameAlanine--tRNA ligase
- EC number
- Alternative names
Gene names
Organism names
- Organism
- Strain
- Taxonomic lineageBacteria > Actinomycetota > Actinomycetes > Propionibacteriales > Nocardioidaceae > Nocardioides
Accessions
- Primary accessionA0A0Q8U9H6
Proteomes
Subcellular Location
Structure
Family & Domains
Features
Showing features for domain.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Domain | 1-719 | Alanyl-transfer RNA synthetases family profile | |||
Domain
Consists of three domains; the N-terminal catalytic domain, the editing domain and the C-terminal C-Ala domain. The editing domain removes incorrectly charged amino acids, while the C-Ala domain, along with tRNA(Ala), serves as a bridge to cooperatively bring together the editing and aminoacylation centers thus stimulating deacylation of misacylated tRNAs.
Sequence similarities
Belongs to the class-II aminoacyl-tRNA synthetase family.
Family and domain databases
Sequence
- Sequence statusComplete
- Length891
- Mass (Da)96,536
- Last updated2016-01-20 v1
- MD5 Checksum7E71F72C053FF9B6D0DD9D9CC3D7A602
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
LMIN01000014 EMBL· GenBank· DDBJ | KRC41925.1 EMBL· GenBank· DDBJ | Genomic DNA |