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
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[Homology]
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spbCKilling factor SdpC; Produces a 42-residue extracellular sporulation delaying protein (SDP) that collapses the proton motive force (probably both the membrane potential and pH gradient) across the cell membrane, which leads to autolysis; may form a proton channel. Induces the lysis of other B.subtilis cells that have not entered the sporulation pathway, inducing cannibalism to provide a source of nutrients to support sporulation, and at the same time delaying commitment to the energetically expensive and irreversible onset of sporulation. Addition of SDP to liquid cultures halts growth [...] (203 aa)    
Predicted Functional Partners:
sdpB
Exporter of killing factor SpbC; Required for the maturation of SdpC to SDP. Not required for SdpC signal peptide cleavage, secretion from the cell or disulfide bond formation.
  
  
 0.983
sdpA
Export of killing factor; Required for the maturation of SdpC to SDP. Not required for SdpC signal peptide cleavage, secretion from the cell or disulfide bond formation.
  
  
 0.982
skfA
Sporulation killing factor A; Produces a 26-residue extracellular sporulation filling factor (SKF) that induces the lysis of other B.subtilis cells that have not entered the sporulation pathway, providing a source of nutrients to support sporulation, and at the same time delaying commitment to the energetically expensive and irreversible onset of sporulation. Can also inhibit growth of other bacteria at high concentrations. Addition of SKF to solid cultures induces killing, but it is much less effective than SDP (AC O34344). Has a role in protecting the secreted lipase LipA against pro [...]
   
  
 0.947
sdpI
Integral membrane regulator of autophagy; Immunity protein that provides protection for the cell against the toxic effects of SDP, its own SdpC-derived killing factor, and that functions as a receptor/signal transduction protein as well. Once SDP accumulates in the extracellular milieu, SdpI binds to SDP, causing sequestration of SdpR at the bacterial membrane.
  
  
 0.917
yknW
Putative permease; Part of an unusual four-component transporter, which is required for protection against the killing factor SdpC (sporulation- delaying protein). Has a role in the assembly of the YknXYZ complex.
   
  
 0.913
sdpR
Transcriptional regulator (ArsR family); Represses the transcription of the sdpIR operon and of several other operons that probably contribute to delaying commitment to sporulation.
   
  
 0.850
yknX
Putative efflux permease; Part of an unusual four-component transporter, which is required for protection against the killing factor SdpC (sporulation- delaying protein).
   
  
 0.849
spo0A
Response regulator; May play the central regulatory role in sporulation. It may be an element of the effector pathway responsible for the activation of sporulation genes in response to nutritional stress. Spo0A may act in concert with Spo0H (a sigma factor) to control the expression of some genes that are critical to the sporulation process. Repressor of abrB, activator of the spoIIa operon. Binds the DNA sequence 5'-TGNCGAA-3' (0A box).
   
  
 0.754
skfF
Sporulation killing factor biosynthesis and export; Probably part of the ABC transporter SkfEF involved in the export of the bacteriocin SKF. Probably responsible for the translocation of bacteriocin SkfA across the membrane.
   
  
 0.703
yknY
Putative ABC transporter (ATP-binding protein); Part of an unusual four-component transporter, which is required for protection against the killing factor SdpC (sporulation- delaying protein).
   
  
 0.688
Your Current Organism:
Bacillus subtilis 168
NCBI taxonomy Id: 224308
Other names: B. subtilis subsp. subtilis str. 168, Bacillus subtilis subsp. subtilis 168, Bacillus subtilis subsp. subtilis str. 168, Bacillus subtilis subsp. subtilis str. BGSC 1A700
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