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.
Knowledge-based Evidence
from curated databases
textmining
Assay-based Predictions
experimentally determined
co-expression
Genomic Predictions
gene neighborhood
gene co-occurrence
gene fusions
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[Homology]
Score
skfASporulation 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 [...] (55 aa)    
Predicted Functional Partners:
spbC
Killing 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 [...]
   
  
 0.986
skfB
Synthesis of sporulation killing factor A; Catalyzes the formation of the thioether bond required for production of the sporulation killing factor (SKF) from SkfA. Forms the cysteine-methionine thioether bond found in SKF; the acceptor amino acid can be hydrophobic, aromatic or a small hydrophilic amino acid but not a larger hydrophilic amino acid, i.e. Met=Ala, Phe, Leu, Tyr>Asn, Ser>>Gln, Glu, Lys. The relative position of Cys and Met in the substrate cannot be inverted, in vitro the thioether bond cannot be made in the absence of the SkfA propeptide, suggesting this is the first rea [...]
  
  
 0.983
skfC
Sporulation killing factor biosynthesis and export; Required for production of the bacteriocin SkfA.
  
  
 0.969
skfE
Sporulation killing factor biosynthesis and export; Probably part of the ABC transporter SkfEF involved in the export of the bacteriocin SKF. Probably responsible for energy coupling to the transport system.
  
  
 0.961
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.
  
  
 0.945
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).
   
  
 0.878
skfG
Sporulation killing factor biosynthesis and export; Required for production of the bacteriocin SkfA.
  
  
 0.875
skfH
Sibling killing effect; Required for production of the bacteriocin SkfA.
  
  
 0.870
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.
   
  
 0.762
albA
Putative antilisterial bacteriocin (subtilosin) production enzyme; Catalyzes the formation of 3 thioether bonds during production of the sactipeptide subtilosin from SboA. In vitro the thioether bonds cannot be made in the absence of the SboA propeptide, suggesting this is the first reaction in subtilosin maturation. In vitro, in the absence of a second substrate, cleaves S-adenosyl-L-methionine into Met and 5'-dA.
  
  
 0.753
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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