B8ZUN3 (RISB_MYCLB) 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:	MLBr00560

Organism

Mycobacterium leprae (strain Br4923) [Complete proteome] [HAMAP]

Taxonomic identifier

561304 [NCBI]

Taxonomic lineage

Bacteria › Actinobacteria › Actinobacteridae › Actinomycetales › Corynebacterineae › Mycobacteriaceae › Mycobacterium

Protein attributes

Sequence length	160 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 – 160	160	6,7-dimethyl-8-ribityllumazine synthase HAMAP MF_00178		PRO_1000195504

Sequences

	Sequence		Length	Mass (Da)
	B8ZUN3 [UniParc]. Last modified March 3, 2009. Version 1. Checksum: EB4A8BDEDB8B026C	FASTA	160	16,337
	10 20 30 40 50 60 MSGGAGIPEV PGIDASGLRL GIVASTWHSR ICDALLAGAR KVAADSGIDG PTVVRVLGAI 70 80 90 100 110 120 EIPVVVQELA RHHDAVVALG VVIRGDTPHF DYVCNSVTQG LTRIALDTST PVGNGVLTTN 130 140 150 160 TEKQALDRAG LPTSAEDKGA QAAAAALTTA LTLLNLRSRI

References

[1]

"Comparative genomic and phylogeographic analysis of Mycobacterium leprae." Monot M., Honore N., Garnier T., Zidane N., Sherafi D., Paniz-Mondolfi A., Matsuoka M., Taylor G.M., Donoghue H.D., Bouwman A., Mays S., Watson C., Lockwood D., Khamispour A., Dowlati Y., Jianping S., Rea T.H., Vera-Cabrera L. , Stefani M.M., Banu S., Macdonald M., Sapkota B.R., Spencer J.S., Thomas J., Harshman K., Singh P., Busso P., Gattiker A., Rougemont J., Brennan P.J., Cole S.T. Nat. Genet. 41:1282-1289(2009) [PubMed: 19881526] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: Br4923.

Cross-references

Sequence databases
EMBL GenBank DDBJ	FM211192 Genomic DNA. Translation: CAR70653.1.
RefSeq	YP_002503105.1. NC_011896.1.
3D structure databases
ProteinModelPortal	B8ZUN3.
SMR	B8ZUN3. Positions 10-158.
ModBase	Search...
Protein-protein interaction databases
STRING	B8ZUN3.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
EnsemblBacteria	EBMYCT00000086412; EBMYCP00000082773; EBMYCG00000085298.
GeneID	7326620.
GenomeReviews	Gene locus MLBr00560 in contig FM211192_GR.
PATRIC	18041474. VBIMycLep121698_0968.
Organism-specific databases
CMR	Search...
Phylogenomic databases
GeneTree	EBGT00050000016935.
HOGENOM	HBG311126.
OMA	SSRALMD.
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.
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_MYCLB

Accession

Primary (citable) accession number: B8ZUN3

Entry history

Integrated into UniProtKB/Swiss-Prot:	July 28, 2009
Last sequence update:	March 3, 2009
Last modified:	January 25, 2012
This is version 18 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program