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ENZYME

ENZYME entry: EC 4.2.1.170

PURL: https://purl.expasy.org/enzyme/EC/4.2.1.170
Accepted Name
2-(omega-methylthio)alkylmalate dehydratase
Reaction catalysed
  • a 2-(omega-methylsulfanyl)alkylmalate = a 2-(omega-methylsulfanyl)alkylmaleate + H2O
  • a 3-(omega-methylsulfanyl)alkylmalate = a 2-(omega-methylsulfanyl)alkylmaleate + H2O
Comment(s)
  • The enzyme, characterized from the plant Arabidopsis thaliana, is involved in the L-methionine side-chain elongation pathway, forming substrates for the biosynthesis of aliphatic glucosinolates.
  • By catalyzing a dehydration of a 2-(omega- methylsulfanyl)alkylmaleate, followed by a hydration at a different position, the enzyme achieves the isomerization of its substrates.
  • The enzyme is a heterodimer comprising a large and a small subunits.
  • The large subunit can also bind to an alternative small subunit, forming EC 4.2.1.33, which participates in L-leucine biosynthesis.
Cross-references
Rhea expert-curated reactions4.2.1.170
ExplorEnz4.2.1.170
IUBMB Enzyme Nomenclature4.2.1.170
UniProtKB/Swiss-Prot
Q94AR8, LEUC_ARATHQ9ZW84, LEUD1_ARATHQ9LYT7, LEUD2_ARATH
BRENDA4.2.1.170
MetaCyc4.2.1.170
KEGG Ligand Database for Enzyme Nomenclature4.2.1.170
EC2PDB4.2.1.170
MEDLINEFind literature relating to 4.2.1.170

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All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 4.2.1.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 4.2.-.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 4.-.-.-