B6JGI3 (RISB_OLICO) 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:	OCAR_5864, OCA5_c21540

Organism

Oligotropha carboxidovorans (strain ATCC 49405 / DSM 1227 / OM5) [Complete proteome] [HAMAP]

Taxonomic identifier

504832 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Alphaproteobacteria › Rhizobiales › Bradyrhizobiaceae › Oligotropha

Protein attributes

Sequence length	163 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 – 163	163	6,7-dimethyl-8-ribityllumazine synthase HAMAP MF_00178		PRO_1000098212

Sequences

	Sequence		Length	Mass (Da)
	B6JGI3 [UniParc]. Last modified December 16, 2008. Version 1. Checksum: 7E80FFB67DEA5244	FASTA	163	17,326
	10 20 30 40 50 60 MATPRRAQLD DKTDITGARV VIVEARFYDD IQDALLEGAK TELDAAGVAY DILSVPGALE 70 80 90 100 110 120 IPAAIAIALD AAKKNGRPYE GAVALGCVIR GDTIHFEIVS AESARGLMDL SVSRSLALGN 130 140 150 160 GIITVNNTEQ AWERARADDL NKGGDAARAA IQMIRIKRKL AKP

References

[1]	"Genome sequence of the chemolithoautotrophic bacterium Oligotropha carboxidovorans OM5T." Paul D., Bridges S., Burgess S.C., Dandass Y., Lawrence M.L. J. Bacteriol. 190:5531-5532(2008) [PubMed: 18539730] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: ATCC 49405 / DSM 1227 / OM5.
[2]	"Complete genome sequences of the chemolithoautotrophic Oligotropha carboxidovorans strains OM4 and OM5." Volland S., Rachinger M., Strittmatter A., Daniel R., Gottschalk G., Meyer O. J. Bacteriol. 193:5043-5043(2011) [PubMed: 21742883] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: ATCC 49405 / DSM 1227 / OM5.

Cross-references

Sequence databases
EMBL GenBank DDBJ	CP001196 Genomic DNA. Translation: ACI92989.1. CP002826 Genomic DNA. Translation: AEI06857.1.
RefSeq	YP_002288854.1. NC_011386.1. YP_004633098.1. NC_015684.1.
3D structure databases
ProteinModelPortal	B6JGI3.
SMR	B6JGI3. Positions 20-161.
ModBase	Search...
Protein-protein interaction databases
STRING	B6JGI3.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	10847286. 6992006.
GenomeReviews	Gene locus OCAR_5864 in contig CP001196_GR.
KEGG	oca:OCAR_5864.
PATRIC	22805613. VBIOliCar134280_1768.
Organism-specific databases
CMR	Search...
Phylogenomic databases
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.
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_OLICO

Accession

Primary (citable) accession number: B6JGI3
Secondary accession number(s): F8BX80

Entry history

Integrated into UniProtKB/Swiss-Prot:	March 24, 2009
Last sequence update:	December 16, 2008
Last modified:	January 25, 2012
This is version 22 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program