A6L8H3 (RISB_PARD8) 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:	BDI_0200

Organism

Parabacteroides distasonis (strain ATCC 8503 / DSM 20701 / NCTC 11152) [Complete proteome] [HAMAP]

Taxonomic identifier

435591 [NCBI]

Taxonomic lineage

Bacteria › Bacteroidetes › Bacteroidia › Bacteroidales › Porphyromonadaceae › Parabacteroides

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_1000040469

Sequences

	Sequence		Length	Mass (Da)
	A6L8H3 [UniParc]. Last modified July 24, 2007. Version 1. Checksum: 083AC66D22269565	FASTA	160	17,487
	10 20 30 40 50 60 MATAYQNLSE YDFNSVPDAS EMNIGIVVAE WNKNITEKLL EGACNTLEKH GVKPENIVVK 70 80 90 100 110 120 RVPGSFELTF GAKRLAETKE LDAVIVLGCV VRGDTPHFDY VCSGVTQGIT ELNLMYDIPF 130 140 150 160 IFGLLTTDTM QQSEDRAGGR YGNKGDEAAV TAIKMVNFSA

References

[1]

"Evolution of symbiotic bacteria in the distal human intestine." Xu J., Mahowald M.A., Ley R.E., Lozupone C.A., Hamady M., Martens E.C., Henrissat B., Coutinho P.M., Minx P., Latreille P., Cordum H., Van Brunt A., Kim K., Fulton R.S., Fulton L.A., Clifton S.W., Wilson R.K., Knight R.D., Gordon J.I. PLoS Biol. 5:1574-1586(2007) [PubMed: 17579514] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: ATCC 8503 / DSM 20701 / NCTC 11152.

Cross-references

Sequence databases
EMBL GenBank DDBJ	CP000140 Genomic DNA. Translation: ABR41987.1.
RefSeq	YP_001301609.1. NC_009615.1.
3D structure databases
ProteinModelPortal	A6L8H3.
ModBase	Search...
Protein-protein interaction databases
STRING	A6L8H3.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	5305291.
GenomeReviews	Gene locus BDI_0200 in contig CP000140_GR.
KEGG	pdi:BDI_0200.
PATRIC	22843536. VBIParDis29947_0191.
Organism-specific databases
CMR	Search...
Phylogenomic databases
eggNOG	COG0054.
HOGENOM	HBG311126.
OMA	AGECSSG.
ProtClustDB	PRK00061.
Enzyme and pathway databases
BioCyc	PDIS435591:BDI_0200-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_PARD8

Accession

Primary (citable) accession number: A6L8H3

Entry history

Integrated into UniProtKB/Swiss-Prot:	January 15, 2008
Last sequence update:	July 24, 2007
Last modified:	December 14, 2011
This is version 33 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program