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
gptXanthine-guanine phosphoribosyltransferase; Acts on guanine, xanthine and to a lesser extent hypoxanthine; Belongs to the purine/pyrimidine phosphoribosyltransferase family. XGPT subfamily. (171 aa)    
Predicted Functional Partners:
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.
  
 
 0.943
apt
Adenine phosphoribosyltransferase; Catalyzes a salvage reaction resulting in the formation of AMP, that is energically less costly than de novo synthesis.
  
 0.929
guaA
GMP synthase; Catalyzes the synthesis of GMP from XMP.
  
 
 0.918
gmk
Guanylate kinase; Essential for recycling GMP and indirectly, cGMP.
   
 0.915
iunH
Inosine-uridine preferring nucleoside hydrolase; Identified by match to protein family HMM PF01156.
    
 0.909
SPO0007
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.
  
 
  0.905
SPO2469
Identified by match to protein family HMM PF03819; match to protein family HMM TIGR00444.
     
 0.903
SPO2904
Ser/Thr protein phosphatase/nucleotidase, putative; Identified by match to protein family HMM PF00149; match to protein family HMM PF02872; Belongs to the 5'-nucleotidase family.
     
 0.903
deoD
Purine nucleoside phosphorylase; Identified by similarity to SP:O34925; match to protein family HMM PF01048; match to protein family HMM TIGR00107.
    
  0.902
hpt
Hypoxanthine phosphoribosyltransferase; Identified by similarity to SP:P37171; match to protein family HMM PF00156; match to protein family HMM TIGR01203; Belongs to the purine/pyrimidine phosphoribosyltransferase family.
    
 0.902
Your Current Organism:
Ruegeria pomeroyi
NCBI taxonomy Id: 246200
Other names: R. pomeroyi DSS-3, Ruegeria pomeroyi DSS-3, Ruegeria pomeroyi str. DSS-3, Ruegeria pomeroyi strain DSS-3, Silicibacter pomeroyi DSS-3
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