Q2S3N1 (RISB_SALRD) 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:	SRU_1068

Organism

Salinibacter ruber (strain DSM 13855 / M31)

Taxonomic identifier

309807 [NCBI]

Taxonomic lineage

Bacteria › Bacteroidetes › Bacteroidetes Order II. Incertae sedis › Rhodothermaceae › Salinibacter

Protein attributes

Sequence length	156 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 – 156	156	6,7-dimethyl-8-ribityllumazine synthase HAMAP MF_00178		PRO_1000040505

Sequences

	Sequence		Length	Mass (Da)
	Q2S3N1 [UniParc]. Last modified January 24, 2006. Version 1. Checksum: 73C007BAF4528255	FASTA	156	16,444
	10 20 30 40 50 60 MPTHLEGDLV VDGHRFALVV GRFNEHVTED LLGGALDTLE RHGADLDEVT VVHVPGSWEI 70 80 90 100 110 120 PVAAQKCART GDYDAVICLG AVVRGETPHF DYVCSGATSG TMQTSLDTEV PVLFGILTTD 130 140 150 TVDQAIARAG SKAGNKGREA AEAAIEMATL MPKLEG

References

[1]

"The genome of Salinibacter ruber: convergence and gene exchange among hyperhalophilic bacteria and archaea." Mongodin E.F., Nelson K.E., Daugherty S., DeBoy R.T., Wister J., Khouri H., Weidman J., Walsh D.A., Papke R.T., Sanchez Perez G., Sharma A.K., Nesbo C.L., MacLeod D., Bapteste E., Doolittle W.F., Charlebois R.L., Legault B., Rodriguez-Valera F. Proc. Natl. Acad. Sci. U.S.A. 102:18147-18152(2005) [PubMed: 16330755] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: DSM 13855 / M31.

Cross-references

Sequence databases
EMBL GenBank DDBJ	CP000159 Genomic DNA. Translation: ABC44827.1.
RefSeq	YP_445200.1. NC_007677.1.
3D structure databases
ProteinModelPortal	Q2S3N1.
SMR	Q2S3N1. Positions 3-155.
ModBase	Search...
Protein-protein interaction databases
STRING	Q2S3N1.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	3852110.
GenomeReviews	Gene locus SRU_1068 in contig CP000159_GR.
KEGG	sru:SRU_1068.
NMPDR	fig|309807.5.peg.1002.
PATRIC	23424525. VBISalRub86502_1107.
TIGR	SRU_1068.
Phylogenomic databases
eggNOG	COG0054.
HOGENOM	HBG311126.
OMA	DYVCNEA.
PhylomeDB	Q2S3N1.
ProtClustDB	CLSK2774323.
Enzyme and pathway databases
BioCyc	SRUB309807:SRU_1068-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_SALRD

Accession

Primary (citable) accession number: Q2S3N1

Entry history

Integrated into UniProtKB/Swiss-Prot:	January 15, 2008
Last sequence update:	January 24, 2006
Last modified:	January 25, 2012
This is version 47 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program