A0A0K1IUD3 · A0A0K1IUD3_HALGI
- ProteinProbable bifunctional tRNA threonylcarbamoyladenosine biosynthesis protein
- Genekae1
- StatusUniProtKB unreviewed (TrEMBL)
- Organism
- Amino acids552 (go to sequence)
- Protein existenceInferred from homology
- Annotation score4/5
Function
function
Required for the formation of a threonylcarbamoyl group on adenosine at position 37 (t6A37) in tRNAs that read codons beginning with adenine. Is a component of the KEOPS complex that is probably involved in the transfer of the threonylcarbamoyl moiety of threonylcarbamoyl-AMP (TC-AMP) to the N6 group of A37. The Kae1 domain likely plays a direct catalytic role in this reaction. The Bud32 domain probably displays kinase activity that regulates Kae1 function.
Catalytic activity
- L-seryl-[protein] + ATP = O-phospho-L-seryl-[protein] + ADP + H+
Cofactor
Note: Binds 1 Fe2+ ion per subunit.
Features
Showing features for binding site, active site.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Binding site | 128 | Fe cation (UniProtKB | ChEBI) | |||
Binding site | 132 | Fe cation (UniProtKB | ChEBI) | |||
Binding site | 149-153 | L-threonylcarbamoyladenylate (UniProtKB | ChEBI) | |||
Binding site | 181 | L-threonylcarbamoyladenylate (UniProtKB | ChEBI) | |||
Binding site | 194 | L-threonylcarbamoyladenylate (UniProtKB | ChEBI) | |||
Binding site | 198 | L-threonylcarbamoyladenylate (UniProtKB | ChEBI) | |||
Binding site | 277 | L-threonylcarbamoyladenylate (UniProtKB | ChEBI) | |||
Binding site | 305 | Fe cation (UniProtKB | ChEBI) | |||
Binding site | 360-368 | ATP (UniProtKB | ChEBI) | |||
Binding site | 377 | ATP (UniProtKB | ChEBI) | |||
Active site | 466 | Proton acceptor; for kinase activity | |||
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | cytoplasm | |
Cellular Component | EKC/KEOPS complex | |
Molecular Function | ATP binding | |
Molecular Function | histone H2AS1 kinase activity | |
Molecular Function | iron ion binding | |
Molecular Function | metalloendopeptidase activity | |
Molecular Function | N(6)-L-threonylcarbamoyladenine synthase activity | |
Molecular Function | protein serine/threonine/tyrosine kinase activity | |
Molecular Function | zinc ion binding | |
Biological Process | phosphorylation | |
Biological Process | tRNA threonylcarbamoyladenosine modification |
Keywords
- Molecular function
- Biological process
- Ligand
Names & Taxonomy
Protein names
- Recommended nameProbable bifunctional tRNA threonylcarbamoyladenosine biosynthesis protein
Including 2 domains:
- Recommended nametRNA N6-adenosine threonylcarbamoyltransferase
- EC number
- Alternative names
- Recommended nameSerine/threonine-protein kinase Bud32
- EC number
Gene names
Organism names
- Organism
- Strains
- Taxonomic lineageArchaea > Euryarchaeota > Stenosarchaea group > Halobacteria > Halobacteriales > Haloferacaceae > Haloferax
Accessions
- Primary accessionA0A0K1IUD3
Proteomes
Subcellular Location
Interaction
Subunit
Component of the KEOPS complex that consists of Kae1, Bud32, Cgi121 and Pcc1; the whole complex dimerizes.
Structure
Family & Domains
Features
Showing features for region, domain.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Region | 1-344 | Kae1 | |||
Region | 22-55 | Disordered | |||
Domain | 41-311 | Gcp-like | |||
Sequence similarities
In the C-terminal section; belongs to the protein kinase superfamily. Tyr protein kinase family. BUD32 subfamily.
In the N-terminal section; belongs to the KAE1 / TsaD family.
Family and domain databases
Sequence
- Sequence statusComplete
- Length552
- Mass (Da)59,181
- Last updated2015-11-11 v1
- ChecksumB07DC2A680BDC6CD
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
CP011947 EMBL· GenBank· DDBJ | AKU07908.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
CP063205 EMBL· GenBank· DDBJ | QOS13005.1 EMBL· GenBank· DDBJ | Genomic DNA |