B7IWM6 (RISB_BACC2) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
6,7-dimethyl-8-ribityllumazine synthase
Short name=DMRL synthase
Short name=Lumazine synthase
EC=2.5.1.9

Alternative name(s):
Riboflavin synthase beta chain

Gene names

Name:	ribH
Ordered Locus Names:	BCG9842_B1014

Organism

Bacillus cereus (strain G9842) [Complete proteome] [HAMAP]

Taxonomic identifier

405531 [NCBI]

Taxonomic lineage

Bacteria › Firmicutes › Bacillales › Bacillaceae › Bacillus › Bacillus cereus group

Protein attributes

Sequence length	153 AA.
Sequence status	Complete.
Protein existence	Inferred from homology

General annotation (Comments)

Function	Riboflavin synthase is a bifunctional enzyme complex catalyzing the formation of riboflavin from 5-amino-6-(1'-D)-ribityl-amino-2,4(1H,3H)-pyrimidinedione and L-3,4-dihydrohy-2-butanone-4-phosphate via 6,7-dimethyl-8-lumazine. The beta subunit catalyzes the condensation of 5-amino-6-(1'-D)-ribityl-amino-2,4(1H,3H)-pyrimidinedione with L-3,4-dihydrohy-2-butanone-4-phosphate yielding 6,7-dimethyl-8-lumazine By similarity. HAMAP MF_00178
Catalytic activity	2 6,7-dimethyl-8-(1-D-ribityl)lumazine = riboflavin + 4-(1-D-ribitylamino)-5-amino-2,6-dihydroxypyrimidine. HAMAP MF_00178
Pathway	Cofactor biosynthesis; riboflavin biosynthesis; riboflavin from 2-hydroxy-3-oxobutyl phosphate and 5-amino-6-(D-ribitylamino)uracil: step 2/2. HAMAP MF_00178
Sequence similarities	Belongs to the DMRL synthase family.

Ontologies

Keywords
Biological process	Riboflavin biosynthesis
Molecular function	Transferase
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	riboflavin biosynthetic process Inferred from electronic annotation. Source: UniProtKB-KW
Cellular component	riboflavin synthase complex Inferred from electronic annotation. Source: InterPro
Molecular function	riboflavin synthase activity Inferred from electronic annotation. Source: EC
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 153	153	6,7-dimethyl-8-ribityllumazine synthase HAMAP MF_00178		PRO_1000195461

Sequences

	Sequence		Length	Mass (Da)
	B7IWM6 [UniParc]. Last modified February 10, 2009. Version 1. Checksum: 9B3483A483A67DE8	FASTA	153	16,249
	10 20 30 40 50 60 MVFEGHLVGT GLKVGVVVGR FNEFITSKLL GGALDGLKRH GVEENDIDVA WVPGAFEIPL 70 80 90 100 110 120 IAKKMASSGK YDAVITLGTV IRGATTHYDY VCNEVAKGVA SLSLQMDIPV IFGVLTTETI 130 140 150 EQAIERAGTK AGNKGYESAV AAIEMAHLSK QWA

References

[1]	"Genome sequence of Bacillus cereus G9842." Dodson R.J., Durkin A.S., Rosovitz M.J., Rasko D.A., Hoffmaster A., Ravel J., Sutton G. Submitted (OCT-2008) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: G9842.

Cross-references

Sequence databases
EMBL GenBank DDBJ	CP001186 Genomic DNA. Translation: ACK93568.1.
RefSeq	YP_002447686.1. NC_011772.1.
3D structure databases
ProteinModelPortal	B7IWM6.
SMR	B7IWM6. Positions 2-152.
ModBase	Search...
Protein-protein interaction databases
STRING	B7IWM6.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
EnsemblBacteria	EBBACT00000103721; EBBACP00000102648; EBBACG00000103714.
GeneID	7181371.
GenomeReviews	Gene locus BCG9842_B1014 in contig CP001186_GR.
KEGG	bcg:BCG9842_B1014.
PATRIC	18903977. VBIBacCer50903_4140.
Organism-specific databases
CMR	Search...
Phylogenomic databases
GeneTree	EBGT00050000002577.
HOGENOM	HBG311126.
OMA	DYVCNEA.
ProtClustDB	PRK00061.
Family and domain databases
HAMAP	MF_00178. Lumazine_synth. [Tree]
InterPro	IPR002180. DMRL_synthase. [Graphical view]
Gene3D	G3DSA:3.40.50.960. DMRL_synthase. 1 hit.
KO	K00794.
PANTHER	PTHR21058. DMRL_synthase. 1 hit.
Pfam	PF00885. DMRL_synthase. 1 hit. [Graphical view]
SUPFAM	SSF52121. DMRL_synthase. 1 hit.
TIGRFAMs	TIGR00114. Lumazine-synth. 1 hit.
ProtoNet	Search...

Entry information

Entry name

RISB_BACC2

Accession

Primary (citable) accession number: B7IWM6

Entry history

Integrated into UniProtKB/Swiss-Prot:	April 14, 2009
Last sequence update:	February 10, 2009
Last modified:	January 25, 2012
This is version 23 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program