A0A179CCK2 · A0A179CCK2_9LACO
- ProteinValine--tRNA ligase
- GenevalS
- StatusUniProtKB unreviewed (TrEMBL)
- Organism
- Amino acids888 (go to sequence)
- Protein existenceInferred from homology
- Annotation score3/5
Function
function
Catalyzes the attachment of valine to tRNA(Val). As ValRS can inadvertently accommodate and process structurally similar amino acids such as threonine, to avoid such errors, it has a 'posttransfer' editing activity that hydrolyzes mischarged Thr-tRNA(Val) in a tRNA-dependent manner.
Catalytic activity
- tRNA(Val) + L-valine + ATP = L-valyl-tRNA(Val) + AMP + diphosphate
Features
Showing features for binding site.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Binding site | 532 | ATP (UniProtKB | ChEBI) | |||
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | cytosol | |
Molecular Function | aminoacyl-tRNA editing activity | |
Molecular Function | ATP binding | |
Molecular Function | valine-tRNA ligase activity | |
Biological Process | valyl-tRNA aminoacylation |
Keywords
- Molecular function
- Biological process
- Ligand
Enzyme and pathway databases
Names & Taxonomy
Protein names
- Recommended nameValine--tRNA ligase
- EC number
- Alternative names
Gene names
Organism names
- Organism
- Strain
- Taxonomic lineageBacteria > Bacillota > Bacilli > Lactobacillales > Lactobacillaceae > Ligilactobacillus
Accessions
- Primary accessionA0A179CCK2
Proteomes
Subcellular Location
Interaction
Subunit
Monomer.
Structure
Family & Domains
Features
Showing features for domain, motif, coiled coil.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Domain | 19-569 | Aminoacyl-tRNA synthetase class Ia | |||
Motif | 47-57 | 'HIGH' region | |||
Motif | 529-533 | 'KMSKS' region | |||
Domain | 612-758 | Methionyl/Valyl/Leucyl/Isoleucyl-tRNA synthetase anticodon-binding | |||
Coiled coil | 816-885 | ||||
Domain | 818-883 | Valyl-tRNA synthetase tRNA-binding arm | |||
Domain
The C-terminal coiled-coil domain is crucial for aminoacylation activity.
ValRS has two distinct active sites: one for aminoacylation and one for editing. The misactivated threonine is translocated from the active site to the editing site.
Sequence similarities
Belongs to the class-I aminoacyl-tRNA synthetase family. ValS type 1 subfamily.
Keywords
- Domain
Phylogenomic databases
Family and domain databases
Sequence
- Sequence statusComplete
- Length888
- Mass (Da)102,909
- Last updated2016-09-07 v1
- Checksum52351FC523481E57
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
LVKI01000035 EMBL· GenBank· DDBJ | OAQ07275.1 EMBL· GenBank· DDBJ | Genomic DNA |