Reviewed, UniProtKB/Swiss-Prot B3EEP4 (RIBB_CHLL2)

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:	Clim_0178

Organism

Chlorobium limicola (strain DSM 245 / NBRC 103803) [Complete proteome] [HAMAP]

Taxonomic identifier

290315 [NCBI]

Taxonomic lineage

Bacteria › Chlorobi › Chlorobia › Chlorobiales › Chlorobiaceae › Chlorobium/Pelodictyon group › Chlorobium

Protein attributes

Sequence length	222 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is not processed.
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.
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.
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.
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 – 222	222	3,4-dihydroxy-2-butanone 4-phosphate synthase HAMAP MF_00180		PRO_1000098275
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)
	B3EEP4-1 [UniParc]. Last modified July 22, 2008. Version 1. Checksum: 15E6D1814CC28655	FASTA	222	23,594
	10 20 30 40 50 60 MNQMLPEQLL NQLNLVEKAL AALRNGQGVL VADDPGRENE ADLIFPAESV TIPQMALLIR 70 80 90 100 110 120 ECSGIVCLCM TDGKIRSLEL PMMVENNTSG FQTAFTVSIE AAEGVTTGVS AADRVKTVRT 130 140 150 160 170 180 AVSENARPSD LRHPGHIFPL RARPGGVLER PGHTEATVDL MRLAGLSPAG VLCELTNPDG 190 200 210 220 SMAGIEETFA FSVQHGFPVL SIGDIVAYRK SLLQTGSQGL SA

References

[1]

"Complete sequence of Chlorobium limicola DSM 245." Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Dalin E., Tice H., Bruce D., Goodwin L., Pitluck S., Schmutz J., Larimer F., Land M., Hauser L., Kyrpides N., Ovchinnikova G., Zhao F., Li T., Liu Z. , Overmann J., Bryant D.A., Richardson P. Submitted (MAY-2008) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Cross-references

Sequence databases
EMBLGenBankDDBJ	CP001097 Genomic DNA. Translation: ACD89277.1.
RefSeq	YP_001942256.1.
3D structure databases
ModBase	Search...
Genome annotation databases
GeneID	6355832.
GenomeReviews	Gene locus Clim_0178 in contig CP001097_GR.
KEGG	cli:Clim_0178.
Organism-specific databases
CMR	Search...
Phylogenomic databases
OMA	YGSGIVC.
Family and domain databases
HAMAP	MF_00180. [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_CHLL2

Accession

Primary (citable) accession number: B3EEP4

Entry history

Integrated into UniProtKB/Swiss-Prot:	March 24, 2009
Last sequence update:	July 22, 2008
Last modified:	November 3, 2009
This is version 11 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)