B1Y9N5 (RISB_THENV) 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:	Tneu_1540

Organism

Thermoproteus neutrophilus (strain DSM 2338 / JCM 9278 / V24Sta) [Complete proteome] [HAMAP]

Taxonomic identifier

444157 [NCBI]

Taxonomic lineage

Archaea › Crenarchaeota › Thermoprotei › Thermoproteales › Thermoproteaceae › Thermoproteus

Protein attributes

Sequence length	150 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 – 150	150	6,7-dimethyl-8-ribityllumazine synthase HAMAP MF_00178		PRO_1000098241

Sequences

	Sequence		Length	Mass (Da)
	B1Y9N5 [UniParc]. Last modified May 20, 2008. Version 1. Checksum: D507A7F28D7C259B	FASTA	150	16,401
	10 20 30 40 50 60 MVRLALVVAE FNYDITSLML QKAIEHARFL GAEVTYVVKV PGVYDIPMVL KDVVAKSDVD 70 80 90 100 110 120 AVATLGAVIQ GATKHDELVA QQAARKILDI AVEVDKPITL GIIGHGANRM QALERVEEYA 130 140 150 RRAVEAAVKL ARRKKLLKDA KYSGATVYVE

References

[1]

"Complete sequence of Thermoproteus neutrophilus V24Sta." US DOE Joint Genome Institute Copeland A., Lucas S., Lapidus A., Glavina del Rio T., Dalin E., Tice H., Bruce D., Goodwin L., Pitluck S., Sims D., Brettin T., Detter J.C., Han C., Kuske C.R., Schmutz J., Larimer F., Land M., Hauser L. , Kyrpides N., Mikhailova N., Biddle J.F., Zhang Z., Fitz-Gibbon S.T., Lowe T.M., Saltikov C., House C.H., Richardson P. Submitted (MAR-2008) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: DSM 2338 / JCM 9278 / V24Sta.

Cross-references

Sequence databases
EMBL GenBank DDBJ	CP001014 Genomic DNA. Translation: ACB40464.1.
RefSeq	YP_001794910.1. NC_010525.1.
3D structure databases
ProteinModelPortal	B1Y9N5.
ModBase	Search...
Protein-protein interaction databases
STRING	B1Y9N5.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	6164826.
GenomeReviews	Gene locus Tneu_1540 in contig CP001014_GR.
KEGG	tne:Tneu_1540.
Organism-specific databases
CMR	Search...
Phylogenomic databases
HOGENOM	HBG311126.
OMA	IQGATKH.
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_THENV

Accession

Primary (citable) accession number: B1Y9N5

Entry history

Integrated into UniProtKB/Swiss-Prot:	March 24, 2009
Last sequence update:	May 20, 2008
Last modified:	January 25, 2012
This is version 24 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program