LIPID MAPS® Gene/Proteome Database (LMPD)

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LMPD Record

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LMP011428

UniProt Annotations

Entry Information
Gene Namesulfoquinovosyldiacylglycerol 1
Protein EntrySQD1_ARATH
UniProt IDO48917
SpeciesArabidopsis
Comments
Comment typeDescription
Biophysicochemical PropertiesKinetic parameters: KM=150 uM for UDP-glucose; KM=10 uM for sulfite; pH dependence: Optimum pH is 7.5-9.5.;
Catalytic ActivityUDP-alpha-D-sulfoquinovose + H(2)O = UDP- alpha-D-glucose + sulfite.
CofactorName=NAD(+); Xref=ChEBI:CHEBI:57540;
Enzyme RegulationConcentrations above 100 uM sulfite inhibit the reaction.
FunctionInvolved in the biosynthesis of sulfolipids found in thylakoid membranes. Converts UDP-glucose and sulfite to the sulfolipid head group precursor UDP-sulfoquinovose. {ECO:0000269|PubMed:11073956}.
InductionInduced in response to altered availability of inorganic phosphate. {ECO:0000269|PubMed:12805589, ECO:0000269|PubMed:9465123}.
SimilarityBelongs to the NAD(P)-dependent epimerase/dehydratase family. {ECO:0000305}.
Subcellular LocationPlastid, chloroplast {ECO:0000269|PubMed:9465123}.
SubunitHomodimer. {ECO:0000269|PubMed:10557279}.