Annotations: 4P77

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B	d4p77b_	Alpha and beta proteins (a+b)	YrdC/RibB	YrdC/RibB	3,4-dihydroxy-2-butanone 4-phosphate synthase, DHBP synthase, RibB	automated matches	(Vibrio cholerae O1 biovar El Tor str. N16961 ) [TaxId: 243277 ],	SCOPe (2.08)
A	d4p77a_	Alpha and beta proteins (a+b)	YrdC/RibB	YrdC/RibB	3,4-dihydroxy-2-butanone 4-phosphate synthase, DHBP synthase, RibB	automated matches	(Vibrio cholerae O1 biovar El Tor str. N16961 ) [TaxId: 243277 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	DHBP_synthase	e4p77B1	A: a+b complex topology	X: YrdC/RibB (From Topology)	H: YrdC/RibB (From Topology)	T: YrdC/RibB	F: DHBP_synthase	ECOD (1.6)
A	DHBP_synthase	e4p77A1	A: a+b complex topology	X: YrdC/RibB (From Topology)	H: YrdC/RibB (From Topology)	T: YrdC/RibB	F: DHBP_synthase	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.90.870.10	Alpha Beta	Alpha-Beta Complex	DHBP synthase	DHBP synthase	CATH (4.3.0)
A	3.90.870.10	Alpha Beta	Alpha-Beta Complex	DHBP synthase	DHBP synthase	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00926	3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP_synthase)	3,4-dihydroxy-2-butanone 4-phosphate synthase	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	3,4-dihydroxy-2-butanone 4-phosphate synthase	cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding manganese ion binding transition metal ion binding lyase activity catalytic activity 3,4-dihydroxy-2-butanone-4-phosphate synthase activity carbon-carbon lyase activity	water-soluble vitamin biosynthetic process small molecule biosynthetic process cellular biosynthetic process flavin-containing compound metabolic process cellular metabolic process vitamin biosynthetic process riboflavin biosynthetic process vitamin metabolic process flavin-containing compound biosynthetic process biosynthetic process metabolic process small molecule metabolic process cellular process water-soluble vitamin metabolic process water-soluble vitamin biosynthetic process small molecule biosynthetic process cellular biosynthetic process flavin-containing compound metabolic process cellular metabolic process vitamin biosynthetic process riboflavin biosynthetic process vitamin metabolic process flavin-containing compound biosynthetic process biosynthetic process metabolic process small molecule metabolic process cellular process water-soluble vitamin metabolic process riboflavin metabolic process	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR017945	DHBP synthase RibB-like alpha/beta domain superfamily	Homologous Superfamily
A, B	IPR000422	3,4-dihydroxy-2-butanone 4-phosphate synthase, RibB	Family

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.