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Protein

3,4-dihydroxy-2-butanone 4-phosphate synthase

Gene

ribB

Organism
Buchnera aphidicola subsp. Baizongia pistaciae (strain Bp)
Status
Reviewed-Annotation score: -Protein inferred from homologyi

Functioni

Catalyzes the conversion of D-ribulose 5-phosphate to formate and 3,4-dihydroxy-2-butanone 4-phosphate.UniRule annotation

Catalytic activityi

D-ribulose 5-phosphate = formate + L-3,4-dihydroxybutan-2-one 4-phosphate.UniRule annotation

Cofactori

Mg2+UniRule annotation, Mn2+UniRule annotationNote: Binds 2 divalent metal cations per subunit. Magnesium or manganese.UniRule annotation

Pathwayi: riboflavin biosynthesis

This protein is involved in step 1 of the subpathway that synthesizes 2-hydroxy-3-oxobutyl phosphate from D-ribulose 5-phosphate.UniRule annotation
Proteins known to be involved in this subpathway in this organism are:
  1. 3,4-dihydroxy-2-butanone 4-phosphate synthase (ribB)
This subpathway is part of the pathway riboflavin biosynthesis, which is itself part of Cofactor biosynthesis.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes 2-hydroxy-3-oxobutyl phosphate from D-ribulose 5-phosphate, the pathway riboflavin biosynthesis and in Cofactor biosynthesis.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Metal bindingi38Magnesium or manganese 1UniRule annotation1
Metal bindingi38Magnesium or manganese 2UniRule annotation1
Binding sitei42SubstrateUniRule annotation1
Sitei136Essential for catalytic activityUniRule annotation1
Metal bindingi153Magnesium or manganese 2UniRule annotation1
Binding sitei174SubstrateUniRule annotation1
Sitei174Essential for catalytic activityUniRule annotation1

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionLyase
Biological processRiboflavin biosynthesis
LigandMagnesium, Manganese, Metal-binding

Enzyme and pathway databases

BioCyciBAPH224915:G1G09-57-MONOMER
UniPathwayiUPA00275; UER00399

Names & Taxonomyi

Protein namesi
Recommended name:
3,4-dihydroxy-2-butanone 4-phosphate synthaseUniRule annotation (EC:4.1.99.12UniRule annotation)
Short name:
DHBP synthaseUniRule annotation
Gene namesi
Name:ribBUniRule annotation
Ordered Locus Names:bbp_056
OrganismiBuchnera aphidicola subsp. Baizongia pistaciae (strain Bp)
Taxonomic identifieri224915 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaGammaproteobacteriaEnterobacteralesErwiniaceaeBuchnera
Proteomesi

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001517931 – 2113,4-dihydroxy-2-butanone 4-phosphate synthaseAdd BLAST211

Interactioni

Subunit structurei

Homodimer.UniRule annotation

Protein-protein interaction databases

STRINGi224915.bbp056

Structurei

3D structure databases

ProteinModelPortaliP59556
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni37 – 38Substrate bindingUniRule annotation2
Regioni150 – 154Substrate bindingUniRule annotation5

Sequence similaritiesi

Belongs to the DHBP synthase family.UniRule annotation

Phylogenomic databases

eggNOGiENOG4105C66 Bacteria
COG0108 LUCA
KOiK02858
OMAiVVCEMLD
OrthoDBiPOG091H008U

Family and domain databases

HAMAPiMF_00180 RibB, 1 hit
InterProiView protein in InterPro
IPR017945 DHBP_synth_RibB-like_a/b_dom
IPR000422 DHBP_synthase_RibB
PfamiView protein in Pfam
PF00926 DHBP_synthase, 1 hit
SUPFAMiSSF55821 SSF55821, 1 hit
TIGRFAMsiTIGR00506 ribB, 1 hit

Sequencei

Sequence statusi: Complete.

P59556-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MTQNLLDQFG TPKTRVKNAI SALRYGHGII VLDNEDRENE GDLIFSGETM
60 70 80 90 100
TTEQMALTIR YGSGIVCLCI TESKRKQLKL PMMVQNNTSK FGTNFTVTIE
110 120 130 140 150
AAEGISTGVS AKDRLTTIRA AINDNAKPSD LNRPGHIFPL QAHKNGILGR
160 170 180 190 200
IGHTEAAIEF VTLAGFKPAG IICELTNRNG TMSKVPDIIK FSKLKKMTIV
210
TIRDLIQYIS R
Length:211
Mass (Da):23,239
Last modified:April 11, 2003 - v1
Checksum:iDC5A5B905265A97D
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AE016826 Genomic DNA Translation: AAO26795.1
RefSeqiWP_011091196.1, NC_004545.1

Genome annotation databases

EnsemblBacteriaiAAO26795; AAO26795; bbp_056
KEGGibab:bbp_056

Similar proteinsi

Entry informationi

Entry nameiRIBB_BUCBP
AccessioniPrimary (citable) accession number: P59556
Entry historyiIntegrated into UniProtKB/Swiss-Prot: April 11, 2003
Last sequence update: April 11, 2003
Last modified: March 28, 2018
This is version 91 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. SIMILARITY comments
    Index of protein domains and families

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