B0BTN9 (RISB_ACTPJ) 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:	APJL_0405

Organism

Actinobacillus pleuropneumoniae serotype 3 (strain JL03) [Complete proteome] [HAMAP]

Taxonomic identifier

434271 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Gammaproteobacteria › Pasteurellales › Pasteurellaceae › Actinobacillus

Protein attributes

Sequence length	153 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 – 153	153	6,7-dimethyl-8-ribityllumazine synthase HAMAP MF_00178		PRO_1000098159

Sequences

	Sequence		Length	Mass (Da)
	B0BTN9 [UniParc]. Last modified February 26, 2008. Version 1. Checksum: A8D41CCD16E0CAD9	FASTA	153	15,980
	10 20 30 40 50 60 MAKITGNLVA TGLKFGIVTA RFNDFINDKL LSGAIDTLVR HGADENNIDT AWVPGAFEIP 70 80 90 100 110 120 LVAKKMATSG KYDAVICLGT VIRGSTTHYD YVCNEAAKGI GAVALETGVP VIFGVLTTEN 130 140 150 IEQAIERAGT KAGNKGSECA LGAIEIVNVL KAI

References

[1]

"Genome biology of Actinobacillus pleuropneumoniae JL03, an isolate of serotype 3 prevalent in China." Xu Z., Zhou Y., Li L., Zhou R., Xiao S., Wan Y., Zhang S., Wang K., Li W., Li L., Jin H., Kang M., Dalai B., Li T., Liu L., Cheng Y., Zhang L., Xu T. , Zheng H., Pu S., Wang B., Gu W., Zhang X.L., Zhu G.-F., Wang S., Zhao G.-P., Chen H. PLoS ONE 3:E1450-E1450(2008) [PubMed: 18197260] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: JL03.

Cross-references

Sequence databases
EMBL GenBank DDBJ	CP000687 Genomic DNA. Translation: ABY68994.1.
RefSeq	YP_001651438.1. NC_010278.1.
3D structure databases
ProteinModelPortal	B0BTN9.
SMR	B0BTN9. Positions 1-149.
ModBase	Search...
Protein-protein interaction databases
STRING	B0BTN9.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	5851914.
GenomeReviews	Gene locus APJL_0405 in contig CP000687_GR.
KEGG	apj:APJL_0405.
PATRIC	20750037. VBIActPle136345_0407.
Organism-specific databases
CMR	Search...
Phylogenomic databases
HOGENOM	HBG311126.
OMA	DYVCNEA.
ProtClustDB	PRK00061.
Enzyme and pathway databases
BioCyc	APLE434271:APJL_0405-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_ACTPJ

Accession

Primary (citable) accession number: B0BTN9

Entry history

Integrated into UniProtKB/Swiss-Prot:	March 24, 2009
Last sequence update:	February 26, 2008
Last modified:	January 25, 2012
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