AC MF_00998; DC Protein; auto TR HAMAP; MF_00998; -; 1; level=0 XX Names: SQ_isomerase XX ID SQUS DE RecName: Full=Sulfoquinovose isomerase; DE Short=SQ isomerase; DE EC=5.3.1.31; XX CC -!- FUNCTION: Catalyzes the isomerization of sulfoquinovose (SQ) to 6- CC deoxy-6-sulfo-D-fructose (SF). CC -!- CATALYTIC ACTIVITY: CC Reaction=6-sulfo-beta-D-quinovose = 6-deoxy-6-sulfo-D-fructose; CC Xref=Rhea:RHEA:40439, ChEBI:CHEBI:77133, ChEBI:CHEBI:142957; CC EC=5.3.1.31; CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:40440; CC -!- SUBUNIT: Homohexamer. CC -!- SIMILARITY: Belongs to the N-acylglucosamine 2-epimerase family. XX DR Pfam; PF07221; GlcNAc_2-epim; 1; trigger=no XX KW Carbohydrate metabolism KW Isomerase XX GO GO:0061593; F:sulfoquinovose isomerase activity GO GO:1902777; P:6-sulfoquinovose(1-) catabolic process XX FT From: SQUS_SALTY (Q8ZKT7) FT ACT_SITE 248 FT /note="Proton donor/acceptor" FT Condition: H FT ACT_SITE 383 FT /note="Proton donor/acceptor" FT Condition: H FT BINDING 55 FT /ligand="6-sulfo-beta-D-quinovose" FT /ligand_id="ChEBI:CHEBI:142957" FT Condition: R FT BINDING 111 FT /ligand="6-sulfo-beta-D-quinovose" FT /ligand_id="ChEBI:CHEBI:142957" FT Condition: Y FT BINDING 172 FT /ligand="6-sulfo-beta-D-quinovose" FT /ligand_id="ChEBI:CHEBI:142957" FT Condition: N FT BINDING 176 FT /ligand="6-sulfo-beta-D-quinovose" FT /ligand_id="ChEBI:CHEBI:142957" FT Condition: H FT BINDING 238 FT /ligand="6-sulfo-beta-D-quinovose" FT /ligand_id="ChEBI:CHEBI:142957" FT Condition: R FT BINDING 251 FT /ligand="6-sulfo-beta-D-quinovose" FT /ligand_id="ChEBI:CHEBI:142957" FT Condition: E FT BINDING 362 FT /ligand="6-sulfo-beta-D-quinovose" FT /ligand_id="ChEBI:CHEBI:142957" FT Condition: Q FT BINDING 379 FT /ligand="6-sulfo-beta-D-quinovose" FT /ligand_id="ChEBI:CHEBI:142957" FT Condition: Q FT BINDING 383 FT /ligand="6-sulfo-beta-D-quinovose" FT /ligand_id="ChEBI:CHEBI:142957" FT Condition: H XX Size: 390-420; Related: None; Template: P32140; Q8ZKT7; Scope: Bacteria; Enterobacterales Fusion: Nter: None Cter: None Duplicate: None Plasmid: None Comments: None XX # Revision 1.9 2023/07/05 //