HAMAP rule MF_00998

General rule information [?]

Accession	MF_00998
Dates	31-MAR-2014 (Created) 5-JUL-2023 (Last updated, Version 9)

Name	SQ_isomerase

Scope

Bacteria; Enterobacterales

Templates

P32140 (SQUS_ECOLI); Q8ZKT7 (SQUS_SALTY): [Recover all]

Triggered by

Propagated annotation [?]

Identifier, protein and gene names [?]

Identifier

SQUS

Protein name

RecName:		Full=Sulfoquinovose isomerase;
		Short=SQ isomerase;
		EC 5.3.1.31;

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 EC 5.3.1.31 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 [?]

From: SQUS_SALTY (Q8ZKT7)

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 [?]