B2RJ75 (RISB_PORG3) 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:	PGN_0901

Organism

Porphyromonas gingivalis (strain ATCC 33277 / DSM 20709 / JCM 12257) [Complete proteome] [HAMAP]

Taxonomic identifier

431947 [NCBI]

Taxonomic lineage

Bacteria › Bacteroidetes › Bacteroidia › Bacteroidales › Porphyromonadaceae › Porphyromonas

Protein attributes

Sequence length	161 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 – 161	161	6,7-dimethyl-8-ribityllumazine synthase HAMAP MF_00178		PRO_1000098216

Sequences

	Sequence		Length	Mass (Da)
	B2RJ75 [UniParc]. Last modified July 1, 2008. Version 1. Checksum: 0E9B8C97FE4D21B0	FASTA	161	17,343
	10 20 30 40 50 60 MATAYHNLSD YDYESVPCGK DLRIGIAVAE WNHNITEPLM KGAIDTLLEH GVSADNIIVQ 70 80 90 100 110 120 HVPGTFELTY ASAYLAEQHE VDAVIAIGCV VRGDTPHFDY ICQGVTQGIT QLNVDGFVPV 130 140 150 160 IFGVLTTETM LQAEERAGGK HGNKGTEAAV TALKMAGLER I

References

[1]

"Determination of the genome sequence of Porphyromonas gingivalis strain ATCC 33277 and genomic comparison with strain W83 revealed extensive genome rearrangements in P. gingivalis." Naito M., Hirakawa H., Yamashita A., Ohara N., Shoji M., Yukitake H., Nakayama K., Toh H., Yoshimura F., Kuhara S., Hattori M., Hayashi T., Nakayama K. DNA Res. 15:215-225(2008) [PubMed: 18524787] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: ATCC 33277 / DSM 20709 / JCM 12257.

Cross-references

Sequence databases
EMBL GenBank DDBJ	AP009380 Genomic DNA. Translation: BAG33420.1.
RefSeq	YP_001929017.1. NC_010729.1.
3D structure databases
ModBase	Search...
Protein-protein interaction databases
STRING	B2RJ75.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	6329268.
GenomeReviews	Gene locus PGN_0901 in contig AP009380_GR.
KEGG	pgn:PGN_0901.
PATRIC	22974750. VBIPorGin26334_0890.
Organism-specific databases
CMR	Search...
Phylogenomic databases
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_PORG3

Accession

Primary (citable) accession number: B2RJ75

Entry history

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

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program