Annotations: 1T6X

Domain Annotation: SCOP/SCOPe Classification SCOP Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1t6xa1	All beta proteins	Reductase/isomerase/elongation factor common domain	Riboflavin kinase-like	ATP-dependent riboflavin kinase-like	Riboflavin kinase domain of bifunctional FAD synthetase	(Thermotoga maritima ) [TaxId: 2336 ],	SCOPe (2.08)
A	d1t6xa2	Alpha and beta proteins (a/b)	Adenine nucleotide alpha hydrolase-like	Nucleotidylyl transferase	Adenylyltransferase	FMN adenylyltransferase domain of bifunctional FAD synthetase	(Thermotoga maritima ) [TaxId: 2336 ],	SCOPe (2.08)
B	d1t6xb1	All beta proteins	Reductase/isomerase/elongation factor common domain	Riboflavin kinase-like	ATP-dependent riboflavin kinase-like	Riboflavin kinase domain of bifunctional FAD synthetase	(Thermotoga maritima ) [TaxId: 2336 ],	SCOPe (2.08)
B	d1t6xb2	Alpha and beta proteins (a/b)	Adenine nucleotide alpha hydrolase-like	Nucleotidylyl transferase	Adenylyltransferase	FMN adenylyltransferase domain of bifunctional FAD synthetase	(Thermotoga maritima ) [TaxId: 2336 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Riboflavin kinase-like	8042305	3000067	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Nucleotidylyl transferase	8042307	3001541	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Nucleotidylyl transferase	8042307	3001541	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Riboflavin kinase-like	8042305	3000067	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Flavokinase	e1t6xA1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: Flavokinase	ECOD (1.6)
A	FAD_syn	e1t6xA2	A: a/b three-layered sandwiches	X: HUP domain-like	H: HUP domains (From Topology)	T: HUP domains	F: FAD_syn	ECOD (1.6)
B	Flavokinase	e1t6xB1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: Flavokinase	ECOD (1.6)
B	FAD_syn	e1t6xB2	A: a/b three-layered sandwiches	X: HUP domain-like	H: HUP domains (From Topology)	T: HUP domains	F: FAD_syn	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.620	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	HUPs	CATH (4.3.0)
A	2.40.30.30	Mainly Beta	Beta Barrel	Elongation Factor Tu (Ef-tu)	domain 3	CATH (4.3.0)
B	3.40.50.620	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	HUPs	CATH (4.3.0)
B	2.40.30.30	Mainly Beta	Beta Barrel	Elongation Factor Tu (Ef-tu)	domain 3	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF06574	FAD synthetase (FAD_syn)	FAD synthetase	-	Family
A, B	PF01687	Riboflavin kinase (Flavokinase)	Riboflavin kinase	This family represents the C-terminal region of the bifunctional riboflavin biosynthesis protein known as RibC in Bacillus subtilis. The RibC protein from Bacillus subtilis has both flavokinase and flavin adenine dinucleotide synthetase (FAD-synthet ...	This family represents the C-terminal region of the bifunctional riboflavin biosynthesis protein known as RibC in Bacillus subtilis. The RibC protein from Bacillus subtilis has both flavokinase and flavin adenine dinucleotide synthetase (FAD-synthetase) activities. RibC plays an essential role in the flavin metabolism [1]. This domain is thought to have kinase activity [2].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	riboflavin kinase/FMN adenylyltransferase	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding riboflavin kinase activity kinase activity transferase activity catalytic activity phosphotransferase activity, alcohol group as acceptor transferase activity, transferring phosphorus-containing groups adenylyltransferase activity FMN adenylyltransferase activity nucleotidyltransferase activity	organonitrogen compound metabolic process flavin-containing compound metabolic process cellular metabolic process cellular nitrogen compound metabolic process vitamin metabolic process organic cyclic compound metabolic process organic substance metabolic process heterocycle metabolic process nitrogen compound metabolic process small molecule metabolic process metabolic process cellular process water-soluble vitamin metabolic process riboflavin metabolic process organonitrogen compound metabolic process flavin-containing compound metabolic process cellular metabolic process cellular nitrogen compound metabolic process vitamin metabolic process organic cyclic compound metabolic process organic substance metabolic process heterocycle metabolic process nitrogen compound metabolic process small molecule metabolic process metabolic process cellular process water-soluble vitamin metabolic process riboflavin metabolic process cellular biosynthetic process FAD metabolic process nucleotide biosynthetic process organonitrogen compound biosynthetic process flavin adenine dinucleotide biosynthetic process flavin adenine dinucleotide metabolic process cellular nitrogen compound biosynthetic process nucleobase-containing compound metabolic process nucleobase-containing small molecule metabolic process phosphate-containing compound metabolic process organic substance biosynthetic process phosphorus metabolic process nucleoside phosphate metabolic process FAD biosynthetic process primary metabolic process nucleotide metabolic process heterocycle biosynthetic process nucleobase-containing compound biosynthetic process flavin-containing compound biosynthetic process biosynthetic process organophosphate metabolic process aromatic compound biosynthetic process organophosphate biosynthetic process organic cyclic compound biosynthetic process nucleoside phosphate biosynthetic process cellular aromatic compound metabolic process phosphorylation ribose phosphate metabolic process carbohydrate derivative metabolic process ribonucleotide biosynthetic process ribonucleotide metabolic process ribonucleoside monophosphate metabolic process FMN metabolic process ribose phosphate biosynthetic process nucleoside monophosphate metabolic process carbohydrate derivative biosynthetic process nucleoside monophosphate biosynthetic process FMN biosynthetic process ribonucleoside monophosphate biosynthetic process vitamin biosynthetic process riboflavin biosynthetic process water-soluble vitamin biosynthetic process small molecule biosynthetic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR015865	Riboflavin kinase domain, bacterial/eukaryotic	Domain
A, B	IPR023465	Riboflavin kinase domain superfamily	Homologous Superfamily
A, B	IPR002606	Riboflavin kinase, bacterial	Family
A, B	IPR014729	Rossmann-like alpha/beta/alpha sandwich fold	Homologous Superfamily
A, B	IPR023468	Riboflavin kinase	Family
A, B	IPR015864	FAD synthetase	Domain

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.