STRINGSTRING
cysB cysB cysA cysA cysE cysE cysK cysK gcvA gcvA topA topA metJ metJ ydjN ydjN aaeR aaeR cysM cysM cysP cysP
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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.
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query proteins and first shell of interactors
white nodes:
second shell of interactors
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proteins of unknown 3D structure
filled nodes:
a 3D structure is known or predicted
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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
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experimentally determined
Predicted Interactions
gene neighborhood
gene fusions
gene co-occurrence
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textmining
co-expression
protein homology
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cysBN-acetylserine-responsive cysteine regulon transcriptional activator; This protein is a positive regulator of gene expression for the cysteine regulon, a system of 10 or more loci involved in the biosynthesis of L-cysteine from inorganic sulfate. The inducer for CysB is N-acetylserine. CysB inhibits its own transcription. (324 aa)    
Predicted Functional Partners:
cysA
Sulfate/thiosulfate transporter subunit; Part of the ABC transporter complex CysAWTP involved in sulfate/thiosulfate import. Responsible for energy coupling to the transport system.
   
  
 0.894
cysE
Serine acetyltransferase; Protein involved in cysteine biosynthetic process; Belongs to the transferase hexapeptide repeat family.
  
   
 0.835
cysK
Cysteine synthase A, O-acetylserine sulfhydrolase A subunit; (Microbial infection) In addition to its role in cysteine synthesis, stimulates the tRNase activity of CdiA-CT from E.coli strain 536 / UPEC; stimulation does not require O-acetylserine sulfhydrylase activity. CdiA is the toxic component of a toxin-immunity protein module, which functions as a cellular contact-dependent growth inhibition (CDI) system. CDI modules allow bacteria to communicate with and inhibit the growth of closely related neighboring bacteria in a contact-dependent fashion (experiments done in strains BW25113 [...]
   
  
 0.821
gcvA
Glycine cleavage system transcriptional activator; Regulatory protein for the glycine cleavage system operon (gcv). Mediates activation of gcv by glycine and repression by purines. GcvA is negatively autoregulated. Binds to three sites upstream of the gcv promoter; Belongs to the LysR transcriptional regulatory family.
  
   
 0.796
topA
DNA topoisomerase I, omega subunit; Releases the supercoiling and torsional tension of DNA, which is introduced during the DNA replication and transcription, by transiently cleaving and rejoining one strand of the DNA duplex. Introduces a single-strand break via transesterification at a target site in duplex DNA. The scissile phosphodiester is attacked by the catalytic tyrosine of the enzyme, resulting in the formation of a DNA- (5'-phosphotyrosyl)-enzyme intermediate and the expulsion of a 3'-OH DNA strand. The free DNA strand then undergoes passage around the unbroken strand, thus re [...]
  
  
 0.777
metJ
Transcriptional repressor, S-adenosylmethionine-binding; This regulatory protein, when combined with SAM (S- adenosylmethionine) represses the expression of the methionine regulon and of enzymes involved in SAM synthesis. It is also autoregulated.
  
   
 0.728
ydjN
Putative transporter; Involved in L-cystine transport. Can probably also transport L-cysteine. Mediates accumulation of the toxic compounds L- selenaproline (SCA) and L-selenocystine (SeCys). Belongs to the dicarboxylate/amino acid:cation symporter (DAACS) (TC 2.A.23) family.
   
  
 0.727
aaeR
Transcriptional regulator for aaeXAB operon; Activates transcription of the aaeXAB operon.
  
     0.705
cysM
Cysteine synthase B (O-acetylserine sulfhydrolase B); Two cysteine synthase enzymes are found. Both catalyze the same reaction. Cysteine synthase B can also use thiosulfate in place of sulfide to give cysteine thiosulfonate as a product.
   
  
 0.686
cysP
Thiosulfate-binding protein; Part of the ABC transporter complex CysAWTP (TC 3.A.1.6.1) involved in sulfate/thiosulfate import. This protein specifically binds thiosulfate and is involved in its transmembrane transport.
   
  
 0.686
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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