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
yjjXNon-canonical purine NTP phosphatase, ITPase/XTPase; Phosphatase that hydrolyzes non-canonical purine nucleotides such as XTP and ITP to their respective diphosphate derivatives. Probably excludes non-canonical purines from DNA/RNA precursor pool, thus preventing their incorporation into DNA/RNA and avoiding chromosomal lesions. ITP and XTP are the best substrates, followed by GDP and dITP. Is not active on dATP and dGTP, and exhibits no phosphatase activity toward pyrimidines (CTP, TTP, UTP, dCTP, and dTTP). Seems also implicated in the resistance against the thiamine metabolism inhib [...] (170 aa)    
Predicted Functional Partners:
ndk
Nucleoside diphosphate kinase; Major role in the synthesis of nucleoside triphosphates other than ATP. The ATP gamma phosphate is transferred to the NDP beta phosphate via a ping-pong mechanism, using a phosphorylated active-site intermediate.
     
  0.900
rdgB
dITP/XTP 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. Can also efficiently hydrolyze 2'- deoxy-N-6-hydroxylaminopurine triphosphate (dHAPTP). 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. To a much lesser extent, is als [...]
   
  
 0.836
yhdE
dTTP/UTP pyrophosphatase; Nucleoside triphosphate pyrophosphatase that hydrolyzes dTTP and UTP. Can also hydrolyze TTP and the modified nucleotides 5-methyl-UTP (m(5)UTP), pseudo-UTP and 5-methyl-CTP (m(5)CTP). Has weak activity with CTP. May have a dual role in cell division arrest and in preventing the incorporation of modified nucleotides into cellular nucleic acids. Important in maintenance of cell shape.
      
 0.805
ytjC
Phosphatase; Phosphoglyceromutase 2; Protein involved in glycolysis and gluconeogenesis; Belongs to the phosphoglycerate mutase family. GpmB subfamily.
  
  
 0.741
yfbM
DUF1877 family protein.
      
 0.680
yrfG
GMP/IMP nucleotidase; Catalyzes the dephosphorylation of different purine nucleotides (GMP and IMP). Also hydrolyzes flavin mononucleotide (FMN). Belongs to the HAD-like hydrolase superfamily.
     
 0.651
nudJ
Bifunctional thiamine pyrimidine pyrophosphate hydrolase and thiamine pyrophosphate hydrolase; Catalyzes the hydrolysis of 4-amino-2-methyl-5- hydroxymethylpyrimidine pyrophosphate (HMP-PP) to 4-amino-2-methyl-5- hydroxymethylpyrimidine phosphate (HMP-P), and hydrolysis of thiamine pyrophosphate (TPP) to thiamine monophosphate (TMP). Can hydrolyze other substrates such as MeO-HMP-PP, CF(3)-HMP-PP and MeO-TPP. Is also a non-specific nucleoside tri- and diphosphatase that releases inorganic orthophosphate; Belongs to the Nudix hydrolase family. NudJ subfamily.
      
 0.595
nfi
Endonuclease V; DNA repair enzyme involved in the repair of deaminated bases. Selectively cleaves double-stranded DNA at the second phosphodiester bond 3' to a deoxyinosine leaving behind the intact lesion on the nicked DNA. Has a wide substrate spectrum. In addition to deoxyinosine- containing DNA, the enzyme cleaves DNA containing urea residues, AP sites, base mismatches, insertion/deletion mismatches, flaps, and pseudo-Y structures. Participates in the excision repair of hypoxanthine and xanthine (deaminated adenine and guanine) in DNA. It thereby reduces the mutagenic effects of ni [...]
      
 0.590
yaaU
Putative MFS sugar transporter; Putative transport protein.
      
 0.589
yfcL
Uncharacterized protein.
  
  
 0.586
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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