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:
guaA
GMP synthase, large subunit; Catalyzes the synthesis of GMP from XMP.
 
 0.995
guaB
Inosine-5'-monophosphate 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.
  
 
 0.969
gmk
Guanylate kinase; Essential for recycling GMP and indirectly, cGMP.
  
 
 0.967
apt
Adenine phosphoribosyltransferase; Catalyzes a salvage reaction resulting in the formation of AMP, that is energically less costly than de novo synthesis.
     
 0.956
AEG59544.1
TIGRFAM: hypoxanthine phosphoribosyltransferase; KEGG: drm:Dred_2376 hypoxanthine phosphoribosyltransferase; PFAM: phosphoribosyltransferase; Belongs to the purine/pyrimidine phosphoribosyltransferase family.
   
 0.925
AEG59209.1
Non-canonical purine NTP pyrophosphatase, rdgB/HAM1 family; 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.
   
 0.918
surE
Stationary-phase survival protein SurE; Nucleotidase that shows phosphatase activity on nucleoside 5'-monophosphates; Belongs to the SurE nucleotidase family.
    
 0.910
AEG59847.1
PFAM: inner-membrane translocator; KEGG: drm:Dred_2175 inner-membrane translocator; Belongs to the binding-protein-dependent transport system permease family.
 
     0.844
AEG59848.1
PFAM: inner-membrane translocator; KEGG: drm:Dred_2174 inner-membrane translocator; Belongs to the binding-protein-dependent transport system permease family.
 
     0.837
AEG59846.1
KEGG: drm:Dred_2176 ABC transporter related; PFAM: ABC transporter related; SMART: AAA ATPase.
       0.811
Your Current Organism:
Desulfotomaculum ruminis
NCBI taxonomy Id: 696281
Other names: D. ruminis DSM 2154, Desulfotomaculum ruminis ATCC 23193, Desulfotomaculum ruminis DL, Desulfotomaculum ruminis DSM 2154, Desulfotomaculum ruminis str. DSM 2154, Desulfotomaculum ruminis strain DSM 2154
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