Reviewed, UniProtKB/Swiss-Prot A7ZRS4 (RIBB_ECO24)

Names and origin

Protein names

Recommended name:
    3,4-dihydroxy-2-butanone 4-phosphate synthase
      Short name=DHBP synthase
    EC=4.1.99.12

Gene names

Name:	ribB
Ordered Locus Names:	EcE24377A_3506

Organism

Escherichia coli O139:H28 (strain E24377A / ETEC) [Complete proteome] [HAMAP]

Taxonomic identifier

331111 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Gammaproteobacteria › Enterobacteriales › Enterobacteriaceae › Escherichia

Protein attributes

Sequence length	217 AA.
Sequence status	Complete.
Protein existence	Inferred from homology.

General annotation (Comments)

Function	Catalyzes the conversion of D-ribulose 5-phosphate to formate and 3,4-dihydroxy-2-butanone 4-phosphate By similarity. HAMAP MF_00180
Catalytic activity	D-ribulose 5-phosphate = formate + L-3,4-dihydroxybutan-2-one 4-phosphate. HAMAP MF_00180
Cofactor	Binds 2 divalent metal cations per subunit. Magnesium or manganese By similarity. HAMAP MF_00180
Pathway	Cofactor biosynthesis; riboflavin biosynthesis; 2-hydroxy-3-oxobutyl phosphate from D-ribulose 5-phosphate: step 1/1. HAMAP MF_00180
Subunit structure	Homodimer By similarity. HAMAP MF_00180
Sequence similarities	Belongs to the DHBP synthase family.

Ontologies

Keywords
Biological process	Riboflavin biosynthesis
Ligand	Magnesium Manganese Metal-binding
Molecular function	Lyase
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	riboflavin biosynthetic process Inferred from electronic annotation. Source: HAMAP
Molecular function	3,4-dihydroxy-2-butanone-4-phosphate synthase activity Inferred from electronic annotation. Source: HAMAP magnesium ion binding Inferred from electronic annotation. Source: HAMAP manganese ion binding Inferred from electronic annotation. Source: HAMAP
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 217	217	3,4-dihydroxy-2-butanone 4-phosphate synthase HAMAP MF_00180		PRO_1000058378
Regions
	Region	37 – 38	2	Substrate binding By similarity
	Region	150 – 154	5	Substrate binding By similarity
Sites
	Metal binding	38	1	Magnesium or manganese 1 By similarity
	Metal binding	38	1	Magnesium or manganese 2 By similarity
	Metal binding	153	1	Magnesium or manganese 2 By similarity
	Binding site	42	1	Substrate By similarity
	Binding site	174	1	Substrate By similarity
	Site	136	1	Essential for catalytic activity By similarity
	Site	174	1	Essential for catalytic activity By similarity

Sequences

	Sequence		Length	Mass (Da)
	A7ZRS4-1 [UniParc]. Last modified October 23, 2007. Version 1. Checksum: 6833C120A1442608	FASTA	217	23,353
	10 20 30 40 50 60 MNQTLLSSFG TPFERVENAL AALREGRGVM VLDDEDRENE GDMIFPAETM TVEQMALTIR 70 80 90 100 110 120 HGSGIVCLCI TEDRRKQLDL PMMVENNTSA YGTGFTVTIE AAEGVTTGVS AADRITTVRA 130 140 150 160 170 180 AIADGAKPSD LNRPGHVFPL RAQAGGVLTR GGHTEATIDL MTLAGFKPAG VLCELTNDDG 190 200 210 TMARAPECIE FANKHNMALV TIEDLVAYRQ AHERKAS

References

[1]

"The pangenome structure of Escherichia coli: comparative genomic analysis of E. coli commensal and pathogenic isolates." Rasko D.A., Rosovitz M.J., Myers G.S.A., Mongodin E.F., Fricke W.F., Gajer P., Crabtree J., Sebaihia M., Thomson N.R., Chaudhuri R., Henderson I.R., Sperandio V., Ravel J. J. Bacteriol. 190:6881-6893(2008) [PubMed: 18676672] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Cross-references

Sequence databases
EMBL GenBank DDBJ	CP000800 Genomic DNA. Translation: ABV18572.1.
RefSeq	YP_001464503.1.
3D structure databases
SMR	A7ZRS4. Positions 1-217.
ModBase	Search...
Protein-protein interaction databases
STRING	A7ZRS4.
Genome annotation databases
GeneID	5590495.
GenomeReviews	Gene locus EcE24377A_3506 in contig CP000800_GR.
KEGG	ecw:EcE24377A_3506.
Organism-specific databases
CMR	Search...
Phylogenomic databases
eggNOG	COG0108.
HOGENOM	HBG735778.
OMA	RGHTEAT.
Family and domain databases
HAMAP	MF_00180. RibB. [Tree]
InterPro	IPR017945. DHBP_synth_RibB-like_a/b_dom. IPR000422. DHBP_synthase_RibB. [Graphical view]
Gene3D	G3DSA:3.90.870.10. DHBP_synth_RibB-like_a/b_dom. 1 hit.
Pfam	PF00926. DHBP_synthase. 1 hit. [Graphical view]
TIGRFAMs	TIGR00506. ribB. 1 hit.
ProtoNet	Search...

Entry information

Entry name

RIBB_ECO24

Accession

Primary (citable) accession number: A7ZRS4

Entry history

Integrated into UniProtKB/Swiss-Prot:	February 5, 2008
Last sequence update:	October 23, 2007
Last modified:	February 9, 2010
This is version 18 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HAMAP (High-quality Automated and Manual Annotation of microbial Proteomes)