A6VPE9 (RISB_ACTSZ) 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:	Asuc_1488

Organism

Actinobacillus succinogenes (strain ATCC 55618 / 130Z) [Complete proteome] [HAMAP]

Taxonomic identifier

339671 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Gammaproteobacteria › Pasteurellales › Pasteurellaceae › Actinobacillus

Protein attributes

Sequence length	157 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 – 157	157	6,7-dimethyl-8-ribityllumazine synthase HAMAP MF_00178		PRO_1000071641

Sequences

	Sequence		Length	Mass (Da)
	A6VPE9 [UniParc]. Last modified August 21, 2007. Version 1. Checksum: D540A86B11D36248	FASTA	157	16,438
	10 20 30 40 50 60 MKILEGKLAA PEAKIAVVVA RFNHFINDSL VDGAVDALKR VGEVKDENIT LVKVPGAYEL 70 80 90 100 110 120 PLAVRRLADT QKFDAIVALG TVIRGGTAHF EYVAGEASSG LGNVSLNADI PVAFGVLTTE 130 140 150 NIEQAIERAG TKAGNKGAEA AMVALEMVNL LNQIKAA

References

[1]

"Complete sequence of Actinobacillus succinogenes 130Z." Copeland A., Lucas S., Lapidus A., Barry K., Glavina del Rio T., Dalin E., Tice H., Pitluck S., Lowry S., Clum A., Schmutz J., Larimer F., Land M., Hauser L., Kyrpides N., Ivanova N., Vieille C., Richardson P. Submitted (JUN-2007) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: ATCC 55618 / 130Z.

Cross-references

Sequence databases
EMBL GenBank DDBJ	CP000746 Genomic DNA. Translation: ABR74846.1.
RefSeq	YP_001344781.1. NC_009655.1.
3D structure databases
ProteinModelPortal	A6VPE9.
SMR	A6VPE9. Positions 1-155.
ModBase	Search...
Protein-protein interaction databases
STRING	A6VPE9.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	5349229.
GenomeReviews	Gene locus Asuc_1488 in contig CP000746_GR.
KEGG	asu:Asuc_1488.
PATRIC	20761354. VBIActSuc117883_1552.
Organism-specific databases
CMR	Search...
Phylogenomic databases
eggNOG	COG0054.
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_ACTSZ

Accession

Primary (citable) accession number: A6VPE9

Entry history

Integrated into UniProtKB/Swiss-Prot:	February 26, 2008
Last sequence update:	August 21, 2007
Last modified:	December 14, 2011
This is version 28 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program