Q8UG70 (RISB_AGRT5) 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:	Atu1171
ORF Names:	AGR_C_2165

Organism

Agrobacterium tumefaciens (strain C58 / ATCC 33970)

Taxonomic identifier

176299 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Alphaproteobacteria › Rhizobiales › Rhizobiaceae › Rhizobium/Agrobacterium group › Agrobacterium

Protein attributes

Sequence length	148 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 – 148	148	6,7-dimethyl-8-ribityllumazine synthase HAMAP MF_00178		PRO_0000134706

Sequences

	Sequence		Length	Mass (Da)
	Q8UG70 [UniParc]. Last modified June 1, 2002. Version 1. Checksum: 32FBE7BBEE7A8839	FASTA	148	15,850
	10 20 30 40 50 60 MSKPHLLIVE ARFYDDMADA LLEGAKFALE EAGATYDVIT VPGALEIPAA IAMALDGADN 70 80 90 100 110 120 DGTEYDGFVA LGMVIRGETY HFDIVSNESS RALMDLAVSE SLPIGNGILT VENDEQAWAR 130 140 VRRSDKDKGG FAARAALTMI ELKKKLGG

References

[1]	"The genome of the natural genetic engineer Agrobacterium tumefaciens C58." Wood D.W., Setubal J.C., Kaul R., Monks D.E., Kitajima J.P., Okura V.K., Zhou Y., Chen L., Wood G.E., Almeida N.F. Jr., Woo L., Chen Y., Paulsen I.T., Eisen J.A., Karp P.D., Bovee D. Sr., Chapman P., Clendenning J. , Deatherage G., Gillet W., Grant C., Kutyavin T., Levy R., Li M.-J., McClelland E., Palmieri A., Raymond C., Rouse G., Saenphimmachak C., Wu Z., Romero P., Gordon D., Zhang S., Yoo H., Tao Y., Biddle P., Jung M., Krespan W., Perry M., Gordon-Kamm B., Liao L., Kim S., Hendrick C., Zhao Z.-Y., Dolan M., Chumley F., Tingey S.V., Tomb J.-F., Gordon M.P., Olson M.V., Nester E.W. Science 294:2317-2323(2001) [PubMed: 11743193] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: C58 / ATCC 33970.
[2]	"Genome sequence of the plant pathogen and biotechnology agent Agrobacterium tumefaciens C58." Goodner B., Hinkle G., Gattung S., Miller N., Blanchard M., Qurollo B., Goldman B.S., Cao Y., Askenazi M., Halling C., Mullin L., Houmiel K., Gordon J., Vaudin M., Iartchouk O., Epp A., Liu F., Wollam C. , Allinger M., Doughty D., Scott C., Lappas C., Markelz B., Flanagan C., Crowell C., Gurson J., Lomo C., Sear C., Strub G., Cielo C., Slater S. Science 294:2323-2328(2001) [PubMed: 11743194] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: C58 / ATCC 33970.
+	Additional computationally mapped references.

Cross-references

Sequence databases
EMBL GenBank DDBJ	AE007869 Genomic DNA. Translation: AAK86974.1.
PIR	AI2720. E97502.
RefSeq	NP_354189.1. NC_003062.2.
3D structure databases
ProteinModelPortal	Q8UG70.
SMR	Q8UG70. Positions 4-148.
ModBase	Search...
Protein-protein interaction databases
STRING	Q8UG70.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	1133209.
GenomeReviews	Gene locus Atu1171 in contig AE007869_GR.
KEGG	atu:Atu1171.
PATRIC	20812101. VBIAgrTum91616_1191.
Phylogenomic databases
eggNOG	COG0054.
HOGENOM	HBG311126.
OMA	SSRALMD.
PhylomeDB	Q8UG70.
ProtClustDB	PRK00061.
Enzyme and pathway databases
BioCyc	ATUM176299-1:ATU1171-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_AGRT5

Accession

Primary (citable) accession number: Q8UG70

Entry history

Integrated into UniProtKB/Swiss-Prot:	June 7, 2004
Last sequence update:	June 1, 2002
Last modified:	January 25, 2012
This is version 53 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program