STRINGSTRING
STRING protein interaction network
Nodes:
Network nodes represent proteins
splice isoforms or post-translational modifications are collapsed, i.e. each node represents all the proteins produced by a single, protein-coding gene locus.
Node Color
colored nodes:
query proteins and first shell of interactors
white nodes:
second shell of interactors
Node Content
empty nodes:
proteins of unknown 3D structure
filled nodes:
a 3D structure is known or predicted
Edges:
Edges represent protein-protein associations
associations are meant to be specific and meaningful, i.e. proteins jointly contribute to a shared function; this does not necessarily mean they are physically binding to each other.
Knowledge-based Evidence
from curated databases
textmining
Assay-based Predictions
experimentally determined
co-expression
Genomic Predictions
gene neighborhood
gene co-occurrence
gene fusions
Your Input:
Neighborhood
Gene Fusion
Co-occurrence
Co-expression
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[Homology]
Score
pbuEHypoxanthine efflux transporter; Involved in the efflux of purine ribonucleosides, such as guanosine, adenosine and inosine, as well as purine bases guanine, adenine and hypoxanthine, and purine base analogs 2,6-diaminopurine, 6- mercaptopurine and 2-fluoroadenine. Therefore plays a role in maintaining the cellular purine base pools and protecting cells against toxic purine base analogs. Modulates expression of the purR and G-box regulons. (388 aa)    
Predicted Functional Partners:
xpt
Xanthine phosphoribosyltransferase; Converts the preformed base xanthine, a product of nucleic acid breakdown, to xanthosine 5'-monophosphate (XMP), so that it can be reused for RNA or DNA synthesis; Belongs to the purine/pyrimidine phosphoribosyltransferase family. Xpt subfamily.
      
 0.907
nupG
Purine nucleoside transporter; Involved in the uptake of the purine ribonucleosides inosine and guanosine.
   
  
 0.907
pbuX
Xanthine permease; Transport of xanthine in the cell; Belongs to the xanthine/uracil permease family. Nucleobase:cation symporter-2 (NCS2) (TC 2.A.40) subfamily.
      
 0.906
yttB
Putative efflux transporter; Evidence 3: Function proposed based on presence of conserved amino acid motif, structural feature or limited homology; Product type pt: putative transporter.
   
  
 0.885
yjbB
Putative exporter; Evidence 3: Function proposed based on presence of conserved amino acid motif, structural feature or limited homology; Product type pt: putative transporter.
      
 0.879
yxaM
Putative efflux transporter; Evidence 3: Function proposed based on presence of conserved amino acid motif, structural feature or limited homology; Product type pt: putative transporter.
      
 0.879
yfkF
Putative efflux transporter; Evidence 3: Function proposed based on presence of conserved amino acid motif, structural feature or limited homology; Product type pt: putative transporter.
   
  
 0.752
bmr
Multidrug-efflux transporter; Energy-dependent efflux pump responsible for decreased drug accumulation in multi-drug-resistant cells. Probably uses a transmembrane proton gradient as the energy source. Causes the efflux of a variety of toxic substances, including such structurally diverse compounds as ethidium bromide, rhodamine and acridine dyes, tetraphenylphosphonium, puromycin, chloramphenicol, doxorubicin, and fluoroquinolone antibiotics; Belongs to the major facilitator superfamily. TCR/Tet family.
  
   
 0.587
purR
Transcriptional regulator of the purine biosynthesis operon; Controls the transcription of the pur operon for purine biosynthetic genes, binds to the control region of the operon. DNA binding is inhibited by 5-phosphoribosyl 1-pyrophosphate; Belongs to the purine/pyrimidine phosphoribosyltransferase family.
      
 0.570
pbuO
Hypoxanthine/guanine permease; Involved in the uptake of the purine bases hypoxanthine and guanine. May work at purine concentrations higher than 100 uM.
      
 0.564
Your Current Organism:
Bacillus subtilis 168
NCBI taxonomy Id: 224308
Other names: B. subtilis subsp. subtilis str. 168, Bacillus subtilis subsp. subtilis 168, Bacillus subtilis subsp. subtilis str. 168, Bacillus subtilis subsp. subtilis str. BGSC 1A700
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