A6H143 (RISB_FLAPJ) 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:	FP2003

Organism

Flavobacterium psychrophilum (strain JIP02/86 / ATCC 49511)

Taxonomic identifier

402612 [NCBI]

Taxonomic lineage

Bacteria › Bacteroidetes › Flavobacteriia › Flavobacteriales › Flavobacteriaceae › Flavobacterium

Protein attributes

Sequence length	189 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 Reference 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 – 189	189	6,7-dimethyl-8-ribityllumazine synthase HAMAP MF_00178		PRO_1000040421

Sequences

	Sequence		Length	Mass (Da)
	A6H143 [UniParc]. Last modified July 24, 2007. Version 1. Checksum: A613191442D2F3C2	FASTA	189	20,910
	10 20 30 40 50 60 MATANKNLSN YDKNTIPNAK NFRFGIVISE WNDHITEGLY SGVIEALTDC GALHKNIIRW 70 80 90 100 110 120 NVPGSFELIY GAKKMIETQK PDVVITIGCV IKGETMHFEF VCEGVTQGIK DLNVLSDIPT 130 140 150 160 170 180 IFCLLTDNTE QQSIDRSGGT HGNKGTEAAI AAIKMAYLRE QANLGFHQSD KLLKTNQLQI EGLPLKIQE

References

[1]

"Complete genome sequence of the fish pathogen Flavobacterium psychrophilum." Duchaud E., Boussaha M., Loux V., Bernardet J.-F., Michel C., Kerouault B., Mondot S., Nicolas P., Bossy R., Caron C., Bessieres P., Gibrat J.-F., Claverol S., Dumetz F., Le Henaff M., Benmansour A. Nat. Biotechnol. 25:763-769(2007) [PubMed: 17592475] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: JIP02/86 / ATCC 49511.

Cross-references

Sequence databases
EMBL GenBank DDBJ	AM398681 Genomic DNA. Translation: CAL44067.1.
RefSeq	YP_001296869.1. NC_009613.1.
3D structure databases
ProteinModelPortal	A6H143.
ModBase	Search...
Protein-protein interaction databases
STRING	A6H143.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	5299303.
GenomeReviews	Gene locus FP2003 in contig AM398681_GR.
KEGG	fps:FP2003.
NMPDR	fig|402612.4.peg.1937.
PATRIC	21908968. VBIFlaPsy4505_2028.
Phylogenomic databases
eggNOG	COG0054.
HOGENOM	HBG311126.
OMA	DYVCNEA.
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_FLAPJ

Accession

Primary (citable) accession number: A6H143

Entry history

Integrated into UniProtKB/Swiss-Prot:	January 15, 2008
Last sequence update:	July 24, 2007
Last modified:	December 14, 2011
This is version 31 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program