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
pepNAminopeptidase N; Aminopeptidase N is involved in the degradation of intracellular peptides generated by protein breakdown during normal growth as well as in response to nutrient starvation. (870 aa)    
Predicted Functional Partners:
pepD
Cytosol non-specific dipeptidase; Dipeptidase with broad substrate specificity. Requires dipeptide substrates with an unblocked N-terminus and the amino group in the alpha or beta position. Non-protein amino acids and proline are not accepted in the C-terminal position, whereas some dipeptide amides and formyl amino acids are hydrolyzed. Also shows cysteinylglycinase activity, which is sufficient for E.coli to utilize cysteinylglycine as a cysteine source.
   
 
 0.981
pepA
Cytosol aminopeptidase; Probably involved in the processing and regular turnover of intracellular proteins. Catalyzes the removal of unsubstituted N-terminal amino acids from various peptides. Required for plasmid ColE1 site-specific recombination but not in its aminopeptidase activity. Could act as a structural component of the putative nucleoprotein complex in which the Xer recombination reaction takes place.
   
 0.981
pepB
Aminopeptidase B; Probably plays an important role in intracellular peptide degradation.
   
 0.942
ggt
Gamma-glutamyltranspeptidase; Cleaves the gamma-glutamyl bond of periplasmic glutathione (gamma-Glu-Cys-Gly), glutathione conjugates, and other gamma-glutamyl compounds. The metabolism of glutathione releases free glutamate and the dipeptide cysteinyl-glycine, which is hydrolyzed to cysteine and glycine by dipeptidases; it may function in amino acid uptake/salvage, or possibly in peptidoglycan linkage. Catalyzes the hydrolysis and transpeptidation of many gamma-glutamyl compounds (including some D- gamma-glutamyl substrates), with a preference for basic and aromatic amino acids as acce [...]
     
 0.918
gshA
Glutamate-cysteine ligase; Protein involved in glutathione biosynthetic process; Belongs to the glutamate--cysteine ligase type 1 family. Type 1 subfamily.
   
 
 0.917
gshB
Protein involved in glutathione biosynthetic process.
  
 
 0.913
chaC
Cation transport regulator; Catalyzes the cleavage of glutathione into 5-oxo-L-proline and a Cys-Gly dipeptide. Acts specifically on glutathione, but not on other gamma-glutamyl peptides.
  
 
  0.903
ybdK
Weak gamma-glutamyl:cysteine ligase; ATP-dependent carboxylate-amine ligase which exhibits weak glutamate--cysteine ligase activity. However, because of the low catalytic rate, the question remains whether L-cysteine is the actual biological substrate; Belongs to the glutamate--cysteine ligase type 2 family. YbdK subfamily.
     
  0.900
pepT
Peptidase T; Cleaves the N-terminal amino acid of tripeptides. Belongs to the peptidase M20B family.
      
 0.887
aspC
Aspartate aminotransferase, PLP-dependent; Aspartate aminotransferase; Protein involved in cellular amino acid catabolic process and aspartate biosynthetic process.
  
 0.884
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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