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{{enzyme
| Name = phosphosulfolactate synthase
| EC_number = 4.4.1.19
| CAS_number = 
| IUBMB_EC_number = 4/4/1/19
| GO_code = 0043817
| image = 
| width = 
| caption = 
}}
In [[enzymology]], a '''phosphosulfolactate synthase''' ({{EC number|4.4.1.19}}) is an [[enzyme]] that [[catalysis|catalyzes]] the [[chemical reaction]]

:(2R)-2-O-phospho-3-sulfolactate <math>\rightleftharpoons</math> phosphoenolpyruvate + hydrogen sulfite

Hence, this enzyme has one [[substrate (biochemistry)|substrate]], [[(2R)-2-O-phospho-3-sulfolactate]], and two [[product (chemistry)|products]], [[phosphoenolpyruvate]] and [[hydrogen sulfite]].

This enzyme belongs to the family of [[lyase]]s, specifically the class of carbon-sulfur lyases.  The systematic name of this enzyme class is '''(2R)-2-O-phospho-3-sulfolactate hydrogen-sulfite-lyase (phosphoenolpyruvate-forming)'''. Other names in common use include '''(2R)-phospho-3-sulfolactate synthase''', and '''(2R)-O-phospho-3-sulfolactate sulfo-lyase'''.  

==Structural studies==

As of late 2007, only one [[tertiary structure|structure]] has been solved for this class of enzymes, with the [[Protein Data Bank|PDB]] accession code {{PDB link|1U83}}.

==References==
{{reflist|1}}
* {{cite journal | author = Graham DE, Xu H, White RH | date = 2002 | title = Identification of coenzyme M biosynthetic phosphosulfolactate synthase: a new family of sulfonate-biosynthesizing enzymes | journal = J. Biol. Chem.  | volume = 277 | pages = 13421&ndash;9  | pmid = 11830598 | doi = 10.1074/jbc.M201011200 | issue = 16 }}

{{enzyme-stub}}

[[Category:EC 4.4.1]]
[[Category:Enzymes of known structure]]