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.
Known Interactions
from curated databases
experimentally determined
Predicted Interactions
gene neighborhood
gene fusions
gene co-occurrence
Others
textmining
co-expression
protein homology
Your Input:
Neighborhood
Gene Fusion
Cooccurrence
Coexpression
Experiments
Databases
Textmining
[Homology]
Score
xptXanthine phosphoribosyltransferase; Converts the preformed base xanthine, a product of nucleic acid breakdown, to xanthosine 5'-monophosphate (XMP), so it can be reused for RNA or DNA synthesis. (190 aa)    
Predicted Functional Partners:
PbuX
Xanthine permease XanP; High-affinity transporter for xanthine; Derived by automated computational analysis using gene prediction method: Protein Homology.
  
 0.980
guaA
GMP synthetase; Catalyzes the synthesis of GMP from XMP.
  
 0.979
guaB
IMP dehydrogenase; Catalyzes the conversion of inosine 5'-phosphate (IMP) to xanthosine 5'-phosphate (XMP), the first committed and rate-limiting step in the de novo synthesis of guanine nucleotides, and therefore plays an important role in the regulation of cell growth. Belongs to the IMPDH/GMPR family.
  
 
 0.975
GuaD
tRNA-specific adenosine deaminase; Derived by automated computational analysis using gene prediction method: Protein Homology.
 
 
  0.968
gmk
Guanylate kinase; Essential for recycling GMP and indirectly, cGMP.
  
 
 0.944
PunA
Purine-nucleoside phosphorylase; Derived by automated computational analysis using gene prediction method: Protein Homology.
  
 
 0.929
RdgB
Non-canonical purine NTP pyrophosphatase; Pyrophosphatase that catalyzes the hydrolysis of nucleoside triphosphates to their monophosphate derivatives, with a high preference for the non-canonical purine nucleotides XTP (xanthosine triphosphate), dITP (deoxyinosine triphosphate) and ITP. Seems to function as a house-cleaning enzyme that removes non-canonical purine nucleotides from the nucleotide pool, thus preventing their incorporation into DNA/RNA and avoiding chromosomal lesions. Belongs to the HAM1 NTPase family.
   
 0.917
surE
5'/3'-nucleotidase SurE; Nucleotidase that shows phosphatase activity on nucleoside 5'-monophosphates; Belongs to the SurE nucleotidase family.
    
 0.907
APW35081.1
Metallophosphatase; Derived by automated computational analysis using gene prediction method: Protein Homology.
    
 0.903
apt
Adenine phosphoribosyltransferase; Catalyzes a salvage reaction resulting in the formation of AMP, that is energically less costly than de novo synthesis.
     
  0.900
Your Current Organism:
Prevotella intermedia
NCBI taxonomy Id: 28131
Other names: ATCC 25611, Bacteroides intermedius, Bacteroides melaninogenicus subsp. intermedius, CCUG 24041, CIP 101222, CIP 103682, DSM 20706, JCM 11150, JCM 12248, NCTC 13070, P. intermedia, VPI 4197, strain Finegold B422
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