K7QJC5 · K7QJC5_CAPAN
- ProteinAcireductone dioxygenase
- GeneARD
- StatusUniProtKB unreviewed (TrEMBL)
- Amino acids200 (go to sequence)
- Protein existenceEvidence at transcript level
- Annotation score3/5
Function
function
Catalyzes 2 different reactions between oxygen and the acireductone 1,2-dihydroxy-3-keto-5-methylthiopentene (DHK-MTPene) depending upon the metal bound in the active site. Fe-containing acireductone dioxygenase (Fe-ARD) produces formate and 2-keto-4-methylthiobutyrate (KMTB), the alpha-ketoacid precursor of methionine in the methionine recycle pathway. Ni-containing acireductone dioxygenase (Ni-ARD) produces methylthiopropionate, carbon monoxide and formate, and does not lie on the methionine recycle pathway.
Catalytic activity
- 1,2-dihydroxy-5-(methylsulfanyl)pent-1-en-3-one + O2 = 3-(methylsulfanyl)propanoate + CO + formate + 2 H+
Cofactor
Ni2+ (UniProtKB | Rhea| CHEBI:49786 )
Note: Binds either 1 Fe or Ni cation per monomer. Iron-binding promotes an acireductone dioxygenase reaction producing 2-keto-4-methylthiobutyrate, while nickel-binding promotes an acireductone dioxygenase reaction producing 3-(methylsulfanyl)propanoate.
Pathway
Amino-acid biosynthesis; L-methionine biosynthesis via salvage pathway; L-methionine from S-methyl-5-thio-alpha-D-ribose 1-phosphate: step 5/6.
Features
Showing features for binding site.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Binding site | 99 | Fe2+ (UniProtKB | ChEBI); for iron-dependent acireductone dioxygenase activity | |||
Binding site | 99 | Ni2+ (UniProtKB | ChEBI); for nickel-dependent acireductone dioxygenase activity | |||
Binding site | 101 | Fe2+ (UniProtKB | ChEBI); for iron-dependent acireductone dioxygenase activity | |||
Binding site | 101 | Ni2+ (UniProtKB | ChEBI); for nickel-dependent acireductone dioxygenase activity | |||
Binding site | 105 | Fe2+ (UniProtKB | ChEBI); for iron-dependent acireductone dioxygenase activity | |||
Binding site | 105 | Ni2+ (UniProtKB | ChEBI); for nickel-dependent acireductone dioxygenase activity | |||
Binding site | 144 | Fe2+ (UniProtKB | ChEBI); for iron-dependent acireductone dioxygenase activity | |||
Binding site | 144 | Ni2+ (UniProtKB | ChEBI); for nickel-dependent acireductone dioxygenase activity | |||
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | cytoplasm | |
Cellular Component | nucleus | |
Molecular Function | acireductone dioxygenase (Ni2+-requiring) activity | |
Molecular Function | acireductone dioxygenase [iron(II)-requiring] activity | |
Molecular Function | iron ion binding | |
Molecular Function | nickel cation binding | |
Biological Process | L-methionine salvage from methylthioadenosine | |
Biological Process | methionine metabolic process |
Keywords
- Molecular function
- Biological process
- Ligand
Enzyme and pathway databases
Names & Taxonomy
Protein names
- Recommended nameAcireductone dioxygenase
- Alternative names
Gene names
Organism names
- Strain
- Taxonomic lineageEukaryota > Viridiplantae > Streptophyta > Embryophyta > Tracheophyta > Spermatophyta > Magnoliopsida > eudicotyledons > Gunneridae > Pentapetalae > asterids > lamiids > Solanales > Solanaceae > Solanoideae > Capsiceae > Capsicum
Accessions
- Primary accessionK7QJC5
Proteomes
Genome annotation databases
Interaction
Protein-protein interaction databases
Structure
Sequence
- Sequence statusComplete
- Length200
- Mass (Da)23,405
- Last updated2013-02-06 v1
- ChecksumB8DC354B7CD0F6B5
Keywords
- Technical term
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
JQ219043 EMBL· GenBank· DDBJ | AFU51538.1 EMBL· GenBank· DDBJ | mRNA | ||
AYRZ02000003 EMBL· GenBank· DDBJ | PHT85858.1 EMBL· GenBank· DDBJ | Genomic DNA |