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HAMAP rule MF_00998

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General rule information [?]

Accession MF_00998
Dates 31-MAR-2014 (Created)
5-JUL-2023 (Last updated, Version 9)
Name SQ_isomerase
Bacteria; Enterobacterales
Templates P32140 (SQUS_ECOLI); Q8ZKT7 (SQUS_SALTY): [Recover all]

Propagated annotation [?]

Identifier, protein and gene names [?]

Protein name
RecName: Full=Sulfoquinovose isomerase;
Short=SQ isomerase;

Comments [?]

Function Catalyzes the isomerization of sulfoquinovose (SQ) to 6-deoxy-6-sulfo-D-fructose (SF).
Catalytic activity RHEA:40439: 6-sulfo-beta-D-quinovose = 6-deoxy-6-sulfo-D-fructose
PhysiologicalDirection=left-to-right (RHEA:40440)
Subunit Homohexamer.
Similarity Belongs to the N-acylglucosamine 2-epimerase family.

Keywords [?]

Gene Ontology [?]

GO:0061593; Molecular function: sulfoquinovose isomerase activity.
GO:1902777; Biological process: 6-sulfoquinovose(1-) catabolic process.

Cross-references [?]

Pfam PF07221; GlcNAc_2-epim; 1;

Features [?]

Key     From     To       Description   Tag   Condition   FTGroup
ACT_SITE     248     248       Proton donor/acceptor     H  
ACT_SITE     383     383       Proton donor/acceptor     H  
BINDING     55     55       /ligand="6-sulfo-beta-D-quinovose" /ligand_id="ChEBI:CHEBI:142957     R  
BINDING     111     111       /ligand="6-sulfo-beta-D-quinovose" /ligand_id="ChEBI:CHEBI:142957     Y  
BINDING     172     172       /ligand="6-sulfo-beta-D-quinovose" /ligand_id="ChEBI:CHEBI:142957     N  
BINDING     176     176       /ligand="6-sulfo-beta-D-quinovose" /ligand_id="ChEBI:CHEBI:142957     H  
BINDING     238     238       /ligand="6-sulfo-beta-D-quinovose" /ligand_id="ChEBI:CHEBI:142957     R  
BINDING     251     251       /ligand="6-sulfo-beta-D-quinovose" /ligand_id="ChEBI:CHEBI:142957     E  
BINDING     362     362       /ligand="6-sulfo-beta-D-quinovose" /ligand_id="ChEBI:CHEBI:142957     Q  
BINDING     379     379       /ligand="6-sulfo-beta-D-quinovose" /ligand_id="ChEBI:CHEBI:142957     Q  
BINDING     383     383       /ligand="6-sulfo-beta-D-quinovose" /ligand_id="ChEBI:CHEBI:142957     H  

Additional information [?]

Size range 390-420 amino acids
Related rules None
Fusion None