SQR oxidizes sulfide to bound persulfide

Stable Identifier
R-HSA-1614665
Type
Reaction [transition]
Species
Homo sapiens
Compartment
mitochondrial inner membrane, cytosol
ReviewStatus
5/5
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SQR oxidizes sulfide to bound persulfide
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When SQR is in the oxidized state, it can bind hydrogen sulfide as persulfide to one of its own cysteine residue, the electrons being transferred to ubiquinone. After that the additional sulfur is dioxygenated by another enzyme (ETHE1). The activity of human SQR was deduced from the orthologue in Arenicola marina (Theissen et al. 2003, Hildebrandt & Grieshaber 2008).

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Catalyst Activity

sulfide:quinone oxidoreductase activity of SQR:FAD [mitochondrial inner membrane]

Physical Entity
SQR:FAD [mitochondrial inner membrane] (Homo sapiens)
Activity
sulfide:quinone oxidoreductase activity (GO:0070224)
Inferred From
Sqr oxidizes sulfide to bound persulfide (Arenicola marina)
Authored
Stephan, R  (2010-10-24)
Reviewed
D'Eustachio, P  (2011-10-13)
Created
Jassal, B  (2011-09-29)
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