The Enzyme Database

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EC 4.4.1.19     
Accepted name: phosphosulfolactate synthase
Reaction: (2R)-2-O-phospho-3-sulfolactate = phosphoenolpyruvate + HSO3-
For diagram of coenzyme M biosynthesis, click here
Glossary: HSO3- = bisulfite
Other name(s): (2R)-phospho-3-sulfolactate synthase; (2R)-O-phospho-3-sulfolactate sulfo-lyase
Systematic name: (2R)-2-O-phospho-3-sulfolactate hydrogen-sulfite-lyase (phosphoenolpyruvate-forming)
Comments: Requires Mg2+. The enzyme from Methanococcus jannaschii catalyses the Michael addition of sulfite to phosphoenolpyruvate. It specifically requires phosphoenolpyruvate and its broad alkaline pH optimum suggests that it uses sulfite rather than bisulfite.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number: 473575-53-0
References:
1.  Graham, D.E., Xu, H. and White, R.H. Identification of coenzyme M biosynthetic phosphosulfolactate synthase: a new family of sulfonate-biosynthesizing enzymes. J. Biol. Chem. 277 (2002) 13421–13429. [PMID: 11830598]
[EC 4.4.1.19 created 2003]
 
 


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