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
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[Homology]
Score
cmkCytidylate kinase; ATP, dATP, and GTP are equally effective as phosphate donors. CMP and dCMP are the best phosphate acceptors. Belongs to the cytidylate kinase family. Type 1 subfamily. (227 aa)    
Predicted Functional Partners:
der
GTPase; GTPase that plays an essential role in the late steps of ribosome biogenesis. GTPase point mutations (but not a deletion mutant) are suppressed by mild overexpression of RelA, probably due to increased levels of the stringent response mediator (p)ppGpp. 50S subunits assembled in the absence of Der are defective and unable to assemble into 70S ribosomes. GTPase activity is stimulated by YihI. Overexpression rescues an rrmJ deletion, stabilizing the 70S ribosome. Der and RrmJ are likely to share a mechanism to stabilize 50S ribosomal subunits at a very late stage of 50S subunit m [...]
  
 0.987
rpsA
30S ribosomal subunit protein S1; Required for translation of most natural mRNAs except for leaderless mRNA. Binds mRNA upstream of the Shine- Dalgarno (SD) sequence and helps it bind to the 30S ribosomal subunit; acts as an RNA chaperone to unfold structured mRNA on the ribosome but is not essential for mRNAs with strong SDs and little 5'-UTR structure, thus it may help fine-tune which mRNAs that are translated. Unwinds dsRNA by binding to transiently formed ssRNA regions; binds about 10 nucleotides. Has a preference for polypyrimidine tracts. Negatively autoregulates its own translat [...]
  
 0.985
udk
Uridine/cytidine kinase; Protein involved in nucleobase, nucleoside and nucleotide interconversion; Belongs to the uridine kinase family.
   
 
 0.983
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.
  
 
 0.972
umpG
Broad specificity 5'(3')-nucleotidase and polyphosphatase; Nucleotidase with a broad substrate specificity as it can dephosphorylate various ribo- and deoxyribonucleoside 5'-monophosphates and ribonucleoside 3'-monophosphates with highest affinity to 3'-AMP. Also hydrolyzes polyphosphate (exopolyphosphatase activity) with the preference for short-chain-length substrates (P20-25). Might be involved in the regulation of dNTP and NTP pools, and in the turnover of 3'-mononucleotides produced by numerous intracellular RNases (T1, T2, and F) during the degradation of various RNAs. Also plays [...]
  
 
 0.954
aroA
5-enolpyruvylshikimate-3-phosphate synthetase; Catalyzes the transfer of the enolpyruvyl moiety of phosphoenolpyruvate (PEP) to the 5-hydroxyl of shikimate-3-phosphate (S3P) to produce enolpyruvyl shikimate-3-phosphate and inorganic phosphate.
 
  
 0.948
yfbR
5'-nucleotidase; Essential component of the deoxycytidine triphosphate (dCTP) pathway for de novo synthesis of thymidylate. Catalyzes the strictly specific dephosphorylation of 2'-deoxyribonucleoside 5'-monophosphates (dAMP, dGMP, dTMP, dUMP, dIMP and dCMP) and does not dephosphorylate 5'-ribonucleotides or ribonucleoside 3'-monophosphates.
     
 0.945
nrdB
Ribonucleoside-diphosphate reductase 1, beta subunit, ferritin-like protein; Provides the precursors necessary for DNA synthesis. Catalyzes the biosynthesis of deoxyribonucleotides from the corresponding ribonucleotides. R2 contains the tyrosyl radical required for catalysis; Belongs to the ribonucleoside diphosphate reductase small chain family.
    
 0.928
nrdA
Ribonucleoside-diphosphate reductase 1, alpha subunit; Provides the precursors necessary for DNA synthesis. Catalyzes the biosynthesis of deoxyribonucleotides from the corresponding ribonucleotides. R1 contains the binding sites for both substrates and allosteric effectors and carries out the actual reduction of the ribonucleotide. It also provides redox-active cysteines.
  
 
 0.918
mazG
Nucleoside triphosphate pyrophosphohydrolase; Involved in the regulation of bacterial cell survival under conditions of nutritional stress. Regulates the type II MazE-MazF toxin-antitoxin (TA) system which mediates programmed cell death (PCD). This is achieved by lowering the cellular concentration of (p)ppGpp produced by RelA under amino acid starvation, thus protecting the cell from the toxicity of MazF. Reduction of (p)ppGpp can be achieved by direct degradation of (p)ppGpp or by degradation of NTPs, which are substrates for (p)ppGpp synthesis by RelA. Belongs to the nucleoside trip [...]
 
  
  0.915
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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