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  • Description: purine nucleoside transporter

Gene name nupG
Synonyms yxjA
Essential no
Product purine nucleoside transporter
Function purine uptake
Gene expression levels in SubtiExpress: nupG
MW, pI 43 kDa, 7.757
Gene length, protein length 1191 bp, 397 aa
Immediate neighbours yxjB, yxiT/1
Get the DNA and protein sequences
(Barbe et al., 2009)
Genetic context
YxjA context.gif
This image was kindly provided by SubtiList
Expression at a glance   PubMed
NupG expression.png

Categories containing this gene/protein

transporters/ other, biosynthesis/ acquisition of nucleotides, membrane proteins

This gene is a member of the following regulons


The gene

Basic information

  • Locus tag: BSU39020

Phenotypes of a mutant

  • a nupN nupG double mutant is unable to utilize externally provided guanosine PubMed

Database entries

  • DBTBS entry: no entry
  • SubtiList entry: [1]

Additional information

The protein

Basic information/ Evolution

  • Catalyzed reaction/ biological activity:
  • Protein family: SLC28A transporter family (according to Swiss-Prot)
  • Paralogous protein(s):

Extended information on the protein

  • Kinetic information:
  • Domains:
  • Modification:
  • Cofactor(s):
  • Effectors of protein activity:

Database entries

  • Structure:
  • KEGG entry: [2]
  • E.C. number:

Additional information

Expression and regulation

  • Operon: nupG
  • Sigma factor:
  • Regulation:
    • expression activated by glucose (4.3 fold) PubMed
    • repressed by hypoxanthine and guanine, PurR-independent, G-boxPubMed
  • Additional information:

Biological materials

  • Mutant:
  • Expression vector:
  • lacZ fusion:
  • GFP fusion:
  • two-hybrid system:
  • Antibody:

Labs working on this gene/protein

Your additional remarks


Boris R Belitsky, Abraham L Sonenshein
CodY-mediated regulation of guanosine uptake in Bacillus subtilis.
J. Bacteriol.: 2011, 193(22);6276-87
[PubMed:21926227] [] [DOI] (I p)

Hannes Hahne, Susanne Wolff, Michael Hecker, Dörte Becher
From complementarity to comprehensiveness--targeting the membrane proteome of growing Bacillus subtilis by divergent approaches.
Proteomics: 2008, 8(19);4123-36
[PubMed:18763711] [] [DOI] (I p)

Lars Engholm Johansen, Per Nygaard, Catharina Lassen, Yvonne Agersø, Hans H Saxild
Definition of a second Bacillus subtilis pur regulon comprising the pur and xpt-pbuX operons plus pbuG, nupG (yxjA), and pbuE (ydhL).
J. Bacteriol.: 2003, 185(17);5200-9
[PubMed:12923093] [] [DOI] (P p)

Hans-Matti Blencke, Georg Homuth, Holger Ludwig, Ulrike Mäder, Michael Hecker, Jörg Stülke
Transcriptional profiling of gene expression in response to glucose in Bacillus subtilis: regulation of the central metabolic pathways.
Metab. Eng.: 2003, 5(2);133-49
[PubMed:12850135] [] [DOI] (P p)