DMSO reductase
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2008-05-28T19:48:27Z
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'''DMSO reductase''' is a [[molybdenum]]-containing enzyme capable of reducing [[dimethyl sulfoxide]] (DMSO) to [[dimethyl sulfide]] (DMS). This enzyme serves as the terminal [[Oxidoreductase|reductase]] under anaerobic conditions in some bacteria, with DMSO being the terminal electron acceptor. During the course of the reaction, the oxygen atom in DMSO is transferred to molybdenum, and then is subsequently removed from molybdenum as water.
[[Image:DMSO_reductase_reaction.png|thumb|500px|none|The reaction catalyzed by DMSO reductase.]]
==Active site and mechanism==
The active site contains a [[molybdopterin]]-containing core that supports molybdenum in its highest oxidation state (Mo<sup>VI</sup>). The proposed mechanism of DMSO reductase cycles molybdenum between the +4 and +6 oxidation states.
[[Image:DMSO_reductase_mechanism.png|thumb|500px|none|The proposed mechanism of DMSO reductase.]]
==References==
{{cite journal
| author = Kisker, C.; Schindelin, H.; Baas, D.; Rétey, J.; Meckenstock, R.U.; Kroneck, P.M.H.
| title = A structural comparison of molybdenum cofactor-containing enzymes
| journal = FEMS Microbiol. Rev.
| year = 1999
| volume = 22
| pages = 503–521
| doi = 10.1111/j.1574-6976.1998.tb00384.x
}}{{PMID|9990727}}
[[Category:Oxidoreductases]]
[[Category:Metalloproteins]]
[[Category:Molybdenum compounds]]