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Gene ugpB from Escherichia coli str. K-12 substr. MG1655: glycerol-3-phosphate transporter subunit
Member of NCBI Protein Clusters PRK10974(See COMBREX Page ) (See NCBI page)
NCBI Entrez GeneID 947962
UniProtKB accession
RefSeq Protein accession NP_417910.1 (PROVISIONAL)
Gene Symbol(s)
  • symbol: ugpB
  • locus tag: b3453
  • aliases: ECK3437, JW3418, psiB, psiC
Organism Escherichia coli str. K-12 substr. MG1655 (NCBI TaxID: 511145)
Other Cross References:
  • S
    Structure(s) available in PDB:
  • C
    Gene cloned by a participant in the Protein Structure Initiative (PSI): TargetDB. (To obtain a clone, please contact the PSI:Biology-Materials Repository.)
  • U
    Protein purified by a participant in the Protein Structure Initiative (PSI): TargetDB. (If you are interested in collaborating to obtain the protein, please contact the Northeast Structural Genomics consortium).
  • Protein described in EcoCyc: EG11047
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Post a comment about this gene to appear on this page (info).
Source Predicted function(s)
NCBI Protein Cluster Prediction glycerol-3-phosphate transporter periplasmic binding protein
Source References Functional description
GSDB Under Review sn-glycerol-3-phosphate-binding periplasmic protein ugpB (source organism: Escherichia coli; strain specific ID: NCBI_TaxID=562)
Functional Status greenGreen (experimental evidence, uncurated)
GO terms
  • MF: GO:0005215 : transporter activity : IEA
  • BP: GO:0015794 : glycerol-3-phosphate transport : IMP
  • BP: GO:0070811 : glycerol-2-phosphate transport : IMP
  • MF: GO:0005515 : protein binding : IPI
  • CC: GO:0042597 : periplasmic space : IEA
  • BP: GO:0006810 : transport : IEA
Domain Structure from CDD
  • UgpB: ABC-type sugar transport system, periplasmic component [Carbohydrate transport and metabolism]

See domain structure on NCBI Conserved Domain Database
Domain structure from Pfam
See domain structure on Pfam Database
Based on the function of this gene, COMBREX predictions were made to the following related genes (mouse over gene symbol for details) [Download ]
CKO_04874 , EcolC_0263 , ECP_3546 , ECs4299 , ECSE_3719 , Ent638_3856 , ESA_04290 , SARI_04076 , SeSA_A3748 , SNSL254_A3826 , SPAB_04419 , SSPA3182 , ugpB (38)
The table at right lists genes that may be "functionally linked to" (i.e., participate in a common biological process, or form a protein complex with) the subject gene of this page, as determined by two sequence-independent methods, including phylogenetic profiling and operon membership (determined by OperonDB). (Info.) These linkages may also be viewed graphically using the program VisANT, by clicking on the headers of the table. Note: VisANT requires Java. To install the latest version of Java, see
 gene neighbourhoods
phylogenetic profile
ugpAglycerol-3-phosphate transporter subunit
ycjPpredicted sugar transporter subunit: membrane comp 
malFmaltose transporter subunit 
ycjOpredicted sugar transporter subunit: membrane comp 
ugpEglycerol-3-phosphate transporter subunit 
Metabolic Annotation from Palsson Lab

Metabolic Reaction: GLYC3Pabc

sn-Glycerol 3-phosphate transport via ABC system
atp[c] + glyc3p[e] + h2o[c] -> adp[c] + glyc3p[c] + h[c] + pi[c]
Transport, Extracellular
Other Genes

Source: Ported to COMBREX by Segre's Lab