B2HP68 (RISB_MYCMM) 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:	MMAR_2223

Organism

Mycobacterium marinum (strain ATCC BAA-535 / M) [Complete proteome] [HAMAP]

Taxonomic identifier

216594 [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_1000098209

Sequences

	Sequence		Length	Mass (Da)
	B2HP68 [UniParc]. Last modified June 10, 2008. Version 1. Checksum: E61EEC3755BB8E17	FASTA	160	16,472
	10 20 30 40 50 60 MSGGAGIPDV PAFDASDVRL AIVASTWHTK ICDALLAGAR NTAADSGIDN PTVVRVLGAI 70 80 90 100 110 120 EIPVVAQELT RNHDAVVALG VVIRGETPHF DYVCDAVTQG LTRVSLDSST PVANGVLTTN 130 140 150 160 SEEQALNRAG LPTSDEDKGA QATAAALTTA LTLRELRAEA

References

[1]

"Insights from the complete genome sequence of Mycobacterium marinum on the evolution of Mycobacterium tuberculosis." Stinear T.P., Seemann T., Harrison P.F., Jenkin G.A., Davies J.K., Johnson P.D., Abdellah Z., Arrowsmith C., Chillingworth T., Churcher C., Clarke K., Cronin A., Davis P., Goodhead I., Holroyd N., Jagels K., Lord A., Moule S. , Mungall K., Norbertczak H., Quail M.A., Rabbinowitsch E., Walker D., White B., Whitehead S., Small P.L., Brosch R., Ramakrishnan L., Fischbach M.A., Parkhill J., Cole S.T. Genome Res. 18:729-741(2008) [PubMed: 18403782] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: ATCC BAA-535 / M.

Cross-references

Sequence databases
EMBL GenBank DDBJ	CP000854 Genomic DNA. Translation: ACC40672.1.
RefSeq	YP_001850527.1. NC_010612.1.
3D structure databases
ModBase	Search...
Protein-protein interaction databases
STRING	B2HP68.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
EnsemblBacteria	EBMYCT00000035002; EBMYCP00000033442; EBMYCG00000034997.
GeneID	6226487.
GenomeReviews	Gene locus MMAR_2223 in contig CP000854_GR.
KEGG	mmi:MMAR_2223.
PATRIC	18065385. VBIMycMar75906_2374.
Organism-specific databases
CMR	Search...
Phylogenomic databases
GeneTree	EBGT00050000016935.
HOGENOM	HBG311126.
OMA	AGECSSG.
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_MYCMM

Accession

Primary (citable) accession number: B2HP68

Entry history

Integrated into UniProtKB/Swiss-Prot:	March 24, 2009
Last sequence update:	June 10, 2008
Last modified:	January 25, 2012
This is version 25 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program