STRING protein interaction network
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:
some 3D structure is known or predicted
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 each other.
Known Interactions
from curated databases
experimentally determined
Predicted Interactions
gene neighborhood
gene fusions
gene co-occurrence
protein homology
Your Input:
Gene Fusion
sydProtein Syd; Interacts with the SecY protein in vivo. May bind preferentially to an uncomplexed state of SecY, thus functioning either as a chelating agent for excess SecY in the cell or as a regulatory factor that negatively controls the translocase function (181 aa)    
Predicted Functional Partners:
Der GTPase-activating protein YihI; A GTPase-activating protein (GAP) that modifies Der/EngA GTPase function, negatively regulating cell growth, probably via ribosome assembly. Stimulates the GTPase activity of Der; a construct missing the first 45 residues is even more stimulatory. Does not stimulate 2 other GTPases (ObgE and Era). Overexpression inhibits cell growth; precursor 16S rRNA accumulates, the 23S rRNA is 6-7 bases longer than usual, and 50S ribosomal subunits are improperly assembled, leading to 45S subunits lacking proteins L9, L18 and L25. Overexpression of Der in the sam [...]
Probable GTP-binding protein EngB; Necessary for normal cell division and for the maintenance of normal septation. Depletion of this protein leads to a severe reduction in growth rate and to extensive filamentation, with a block beyond the stage of segregation. Essential for bacteria survival
Carbon storage regulator; A key translational regulator that binds mRNA to regulate translation initiation and/or mRNA stability, initially identified for its effects on central carbon metabolism. Mediates global changes in gene expression, shifting from rapid growth to stress survival by linking envelope stress, the stringent response and the catabolite repression systems. Binds to the 5'-UTR of mRNA to repress or activate translation; 2 binding sites on the homodimer can bridge 2 sites within target RNA (By similarity). Exerts reciprocal effects on enzymes of gluconeogenesis and glyc [...]
NADPH-dependent 7-cyano-7-deazaguanine reductase; Catalyzes the NADPH-dependent reduction of 7-cyano-7- deazaguanine (preQ0) to 7-aminomethyl-7-deazaguanine (preQ1), a late step in the queuosine pathway. Is highly specific for its natural substrate preQ0, since it cannot use various aliphatic, aromatic, benzylic and heterocyclic nitriles, such as acetonitrile, benzonitrile, benzylcyanide and 2-cyanopyrrole, although it can reduce the substrate analog 5-cyanopyrrolo[2,3- d]pyrimidin-4-one with lesser efficiency; Belongs to the GTP cyclohydrolase I family. QueF type 2 subfamily
Cell division protein ZapC; Contributes to the efficiency of the cell division process by stabilizing the polymeric form of the cell division protein FtsZ. Acts by promoting interactions between FtsZ protofilaments and suppressing the GTPase activity of FtsZ
Uncharacterized protein YiiD; Putative acetyltransferase
annotation not available
Phage shock protein B; The phage shock protein (psp) operon (pspABCDE) may play a significant role in the competition for survival under nutrient- or energy-limited conditions. PspB is involved in transcription regulation; Belongs to the PspB family
Negative modulator of initiation of replication; Negative regulator of replication initiation, which contributes to regulation of DNA replication and ensures that replication initiation occurs exactly once per chromosome per cell cycle. Binds to pairs of hemimethylated GATC sequences in the oriC region, thus preventing assembly of replication proteins and re- initiation at newly replicated origins. Repression is relieved when the region becomes fully methylated. Can also bind to hemimethylated GATC sequences outside of oriC region. Binds, with less affinity, to fully methylated GATC si [...]
annotation not available
Your Current Organism:
Escherichia coli K12 MG1655
NCBI taxonomy Id: 511145
Other names: E. coli str. K-12 substr. MG1655, Escherichia coli K12 MG1655, Escherichia coli K12 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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