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
aptAdenine phosphoribosyltransferase; Catalyzes a salvage reaction resulting in the formation of AMP, that is energically less costly than de novo synthesis. (183 aa)    
Predicted Functional Partners:
guaA
GMP synthetase (glutamine aminotransferase); Catalyzes the synthesis of GMP from XMP.
  
 0.992
adeD
Cryptic adenine deaminase; Protein involved in metabolic process; Belongs to the metallo-dependent hydrolases superfamily. Adenine deaminase family.
   
 0.992
gpt
Xanthine phosphoribosyltransferase; Acts on guanine, xanthine and to a lesser extent hypoxanthine.
  
 
 0.990
hpt
Hypoxanthine phosphoribosyltransferase; Acts preferentially on hypoxanthine; has very low activity towards guanine. Inactive towards xanthine. Belongs to the purine/pyrimidine phosphoribosyltransferase family.
  
 0.984
deoD
Purine nucleoside phosphorylase 1; Cleavage of guanosine or inosine to respective bases and sugar-1-phosphate molecules.
    
 0.980
guaC
GMP reductase; Catalyzes the irreversible NADPH-dependent deamination of GMP to IMP. It functions in the conversion of nucleobase, nucleoside and nucleotide derivatives of G to A nucleotides, and in maintaining the intracellular balance of A and G nucleotides; Belongs to the IMPDH/GMPR family. GuaC type 1 subfamily.
  
 
 0.977
purB
Adenylosuccinate lyase; Protein involved in purine nucleotide biosynthetic process; Belongs to the lyase 1 family. Adenylosuccinate lyase subfamily.
  
 0.976
purH
IMP cyclohydrolase and phosphoribosylaminoimidazolecarboxamide formyltransferase; Protein involved in purine nucleotide biosynthetic process and nucleobase, nucleoside and nucleotide interconversion.
  
 0.968
adk
Adenylate kinase; Catalyzes the reversible transfer of the terminal phosphate group between ATP and AMP. Plays an important role in cellular energy homeostasis and in adenine nucleotide metabolism; Belongs to the adenylate kinase family.
  
 
 0.961
gmk
Guanylate kinase; Essential for recycling GMP and indirectly, cGMP. Belongs to the guanylate kinase family.
  
 
 0.952
Your Current Organism:
Escherichia coli K12
NCBI taxonomy Id: 511145
Other names: E. coli str. K-12 substr. MG1655, Escherichia coli MG1655, Escherichia coli str. K-12 substr. MG1655, Escherichia coli str. K12 substr. MG1655, Escherichia coli str. MG1655, Escherichia coli strain MG1655
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