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
cbtACP4-44 prophage; Toxic component of a type IV toxin-antitoxin (TA) system. Acts as a dual toxin inhibitor that blocks cell division and cell elongation in genetically separable interactions with FtsZ and MreB. Interacts with cytoskeletal proteins FtsZ and MreB; inhibits FtsZ GTP-dependent polymerization and GTPase activity as well as MreB ATP-dependent polymerization. Binds to both the N- and C-terminus of FtsZ, likely blocking its polymerization and localization, leading to blockage of cell division. Overexpression results in inhibition of growth in liquid cultures and decrease in col [...] (124 aa)    
Predicted Functional Partners:
cbeA
CP4-44 prophage; Antitoxin component of a type IV toxin-antitoxin (TA) system. Antitoxin that counteracts the effect of its cognate toxin CbtA (YeeV). It does not bind to the toxin but instead binds to MreB and FtsZ (the toxin targets), enhancing their polymerization by forming higher-order bundles; it is probably retained in the MreB and FtsZ filament bundles. The mechanism has been proposed to require intergenic DNA, in cis, between the cbeA (yeeU) and cbta (yeeV) genes. The intergenic region was not found to be necessary in another study. Also counteracts the morphological defects c [...]
  
  
 0.977
yafW
CP4-6 prophage; Antitoxin component of a type IV toxin-antitoxin (TA) system. Antitoxin that counteracts the effect of cognate toxin YkfI. It does not seem to bind to the cognate toxin but instead induces toxin loss by an unknown mechanism. Co-overexpression of toxin YkfI and antitoxin YafW leads to formation of elongated cells.
  
  
 0.813
ghoT
Toxin of GhoTS toxin-antitoxin pair; Toxic component of a type V toxin-antitoxin (TA) system. Causes membrane damage when induced by MqsR, slowing cell growth and increasing the formation of dormant persister cells; involved with GhoS, its antitoxin, in reducing cell growth during antibacterial stress. Overexpression causes cell lysis, forming ghost cells; both effects are neutralized by expression of GhoS. Overexpression in the presence of ampicillin increases persister cell formation (persister cells exhibit antibiotic tolerance without genetic change). Overexpression causes about 90 [...]
      
 0.811
ghoS
Antitoxin of GhoTS toxin-antitoxin pair; Antitoxin component of a type V toxin-antitoxin (TA) system. Neutralizes the toxic effects of toxin GhoT by digesting ghoT transcripts in a sequence-specific manner. In concert with GhoT is involved in reducing cell growth during antibacterial stress. Overexpression leads to transcript level reduction of 20 other mRNAs involved in purine or pyrimidine synthesis and transport. Not seen to bind its own promoter DNA.
      
 0.809
yfjZ
CP4-57 prophage; Antitoxin component of a type IV toxin-antitoxin (TA) system. Antitoxin that counteracts the effect of cognate toxin YpjF. Also counteracts the effect of non-cognate toxins CbtA and YfkI.
  
  
 0.807
cptA
Toxin of CptAB toxin-antitoxin pair; A probable inner membrane protein. Has been shown not to be a toxin, no effects on growth are seen in LB or minimal medium up to 6 or 21 hours (respectively) after induction of expression. Interacts with cytoskeletal proteins FtsZ and MreB; inhibits FtsZ GTP-dependent polymerization as well as MreB ATP- dependent polymerization. Restores production of prodigiosin antibiotic (Pig) in Serratia strains with deletions of sdhE-ygfX; overexpression of this protein and CptB also restores Pig production to a slightly lesser extent in Serratia.
      
 0.807
mreB
Cell wall structural complex MreBCD, actin-like component MreB; Forms membrane-associated dynamic filaments that are essential for cell shape determination. Acts by regulating cell wall synthesis and cell elongation, and thus cell shape. A feedback loop between cell geometry and MreB localization maintains elongated cell shape by targeting cell wall growth to regions of negative cell wall curvature. Filaments rotate around the cell circumference in concert with the cell wall synthesis enzymes. The process is driven by the cell wall synthesis machinery and does not depend on MreB polyme [...]
      
 0.785
relE
Qin prophage; Toxic component of a type II toxin-antitoxin (TA) system. A sequence-specific, ribosome-dependent mRNA endoribonuclease that inhibits translation during amino acid starvation (the stringent response). In vitro acts by cleaving mRNA with high codon specificity in the ribosomal A site between positions 2 and 3. The stop codon UAG is cleaved at a fast rate while UAA and UGA are cleaved with intermediate and slow rates. In vitro mRNA cleavage can also occur in the ribosomal E site after peptide release from peptidyl- tRNA in the P site as well as on free 30S subunits. In vivo [...]
      
 0.784
ftsZ
GTP-binding tubulin-like cell division protein; Essential cell division protein that forms a contractile ring structure (Z ring) at the future cell division site. The regulation of the ring assembly controls the timing and the location of cell division. One of the functions of the FtsZ ring is to recruit other cell division proteins to the septum to produce a new cell wall between the dividing cells. Binds GTP and shows GTPase activity. Polymerization and bundle formation is enhanced by CbeA.
      
 0.740
yeeT
CP4-44 prophage; uncharacterized protein; Belongs to the YeeT/YkfH/YpjJ family.
  
  
 0.661
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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