Q83HB9 (RISB_TROW8) 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:	TW710

Organism

Tropheryma whipplei (strain TW08/27) (Whipple's bacillus) [Complete proteome] [HAMAP]

Taxonomic identifier

218496 [NCBI]

Taxonomic lineage

Bacteria › Actinobacteria › Actinobacteridae › Actinomycetales › Micrococcineae › Tropheryma

Protein attributes

Sequence length	156 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 – 156	156	6,7-dimethyl-8-ribityllumazine synthase HAMAP MF_00178		PRO_0000134824

Sequences

	Sequence		Length	Mass (Da)
	Q83HB9 [UniParc]. Last modified June 1, 2003. Version 1. Checksum: D232A0F89D49FB91	FASTA	156	16,770
	10 20 30 40 50 60 MGKDRNLSLN SPESIQSVIG DTDIKIAVIA AMWHEKIVRG LIDGATREIV SSGSHAELFR 70 80 90 100 110 120 VPGSVELVLA CKKLLKTFDA AVALGVILRG ETDHNTHIAR LVLSGITDVM LALEKPIGIG 130 140 150 VLTIDTEQQG LDRSSGDYNA GVNAARAVIR MVRLFR

References

[1]

"Sequencing and analysis of the genome of the Whipple's disease bacterium Tropheryma whipplei." Bentley S.D., Maiwald M., Murphy L.D., Pallen M.J., Yeats C.A., Dover L.G., Norbertczak H.T., Besra G.S., Quail M.A., Harris D.E., von Herbay A., Goble A., Rutter S., Squares R., Squares S., Barrell B.G., Parkhill J., Relman D.A. Lancet 361:637-644(2003) [PubMed: 12606174] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: TW08/27.

Cross-references

Sequence databases
EMBL GenBank DDBJ	BX251412 Genomic DNA. Translation: CAD67369.1.
RefSeq	NP_789631.1. NC_004551.1.
3D structure databases
ProteinModelPortal	Q83HB9.
ModBase	Search...
Protein-protein interaction databases
STRING	Q83HB9.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	1064910.
GenomeReviews	Gene locus TW710 in contig BX072543_GR.
KEGG	tws:TW710.
PATRIC	24000103. VBITroWhi42739_0861.
Organism-specific databases
CMR	Search...
Phylogenomic databases
eggNOG	COG0054.
HOGENOM	HBG311126.
OMA	VVAAQWH.
PhylomeDB	Q83HB9.
ProtClustDB	CLSK230230.
Enzyme and pathway databases
BioCyc	TWHI218496:TW0676-MONOMER.
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_TROW8

Accession

Primary (citable) accession number: Q83HB9

Entry history

Integrated into UniProtKB/Swiss-Prot:	June 7, 2004
Last sequence update:	June 1, 2003
Last modified:	January 25, 2012
This is version 45 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program