A0A109UUT3 · A0A109UUT3_9EURY
- ProteinAdenylosuccinate synthetase
- GenepurA
- StatusUniProtKB unreviewed (TrEMBL)
- Organism
- Amino acids339 (go to sequence)
- Protein existenceInferred from homology
- Annotation score3/5
Function
function
Plays an important role in the de novo pathway of purine nucleotide biosynthesis. Catalyzes the first committed step in the biosynthesis of AMP from IMP.
Catalytic activity
- IMP + L-aspartate + GTP = N6-(1,2-dicarboxyethyl)-AMP + GDP + phosphate + 2 H+
Cofactor
Note: Binds 1 Mg2+ ion per subunit.
Pathway
Purine metabolism; AMP biosynthesis via de novo pathway; AMP from IMP: step 1/2.
Features
Showing features for binding site, active site.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Binding site | 12-18 | GTP (UniProtKB | ChEBI) | |||
Active site | 13 | Proton acceptor | |||
Binding site | 13 | Mg2+ (UniProtKB | ChEBI) | |||
Binding site | 13-16 | IMP (UniProtKB | ChEBI); ligand shared between dimeric partners; in other chain | |||
Binding site | 40-43 | IMP (UniProtKB | ChEBI); ligand shared between dimeric partners; in other chain | |||
Binding site | 42 | Mg2+ (UniProtKB | ChEBI) | |||
Binding site | 42-44 | GTP (UniProtKB | ChEBI) | |||
Active site | 43 | Proton donor | |||
Binding site | 127 | IMP (UniProtKB | ChEBI); ligand shared between dimeric partners; in other chain | |||
Binding site | 141 | IMP (UniProtKB | ChEBI); ligand shared between dimeric partners | |||
Binding site | 179 | IMP (UniProtKB | ChEBI); ligand shared between dimeric partners; in other chain | |||
Binding site | 194 | IMP (UniProtKB | ChEBI); ligand shared between dimeric partners; in other chain | |||
Binding site | 252-258 | substrate | |||
Binding site | 256 | IMP (UniProtKB | ChEBI); ligand shared between dimeric partners; in other chain | |||
Binding site | 258 | GTP (UniProtKB | ChEBI) | |||
Binding site | 284-286 | GTP (UniProtKB | ChEBI) | |||
Binding site | 323-325 | GTP (UniProtKB | ChEBI) | |||
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | cytoplasm | |
Molecular Function | adenylosuccinate synthase activity | |
Molecular Function | GTP binding | |
Molecular Function | magnesium ion binding | |
Biological Process | 'de novo' AMP biosynthetic process | |
Biological Process | IMP metabolic process |
Keywords
- Molecular function
- Biological process
- Ligand
Enzyme and pathway databases
Names & Taxonomy
Protein names
- Recommended nameAdenylosuccinate synthetase
- EC number
- Short namesAMPSase ; AdSS
- Alternative names
Gene names
Organism names
- Organism
- Strain
- Taxonomic lineageArchaea > Euryarchaeota > Methanomada group > Methanobacteria > Methanobacteriales > Methanobacteriaceae > Methanobrevibacter
Accessions
- Primary accessionA0A109UUT3
Proteomes
Subcellular Location
Interaction
Structure
Sequence
- Sequence statusComplete
- Length339
- Mass (Da)37,016
- Last updated2016-04-13 v1
- Checksum5E9A10ED1CF4FE6B
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
CP010834 EMBL· GenBank· DDBJ | AMD17813.1 EMBL· GenBank· DDBJ | Genomic DNA |