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:
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Gene Fusion
Cooccurrence
Coexpression
Experiments
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Textmining
[Homology]
Score
purRTranscriptional repressor for pur regulon, glyA, glnB, prsA, speA (GalR/LacI family); Is the main repressor of the genes involved in the de novo synthesis of purine nucleotides, regulating purB, purC, purEK, purF, purHD, purL, purMN and guaBA expression. PurR is allosterically activated to bind its cognate DNA by binding the purine corepressors, hypoxanthine or guanine, thereby effecting transcription repression. (341 aa)    
Predicted Functional Partners:
argR-2
Putative arginine repressor; Regulates arginine biosynthesis genes.
      
 0.694
purF
Amidophosphoribosyltransferase; Catalyzes the formation of phosphoribosylamine from phosphoribosylpyrophosphate (PRPP) and glutamine; In the C-terminal section; belongs to the purine/pyrimidine phosphoribosyltransferase family.
   
 
 0.667
purD
GAR synthetase; phosphoribosylamine--glycine ligase. (SW:PUR2_SALTY); Belongs to the GARS family.
   
  
 0.660
ptsA
General PTS family enzyme I; Similar to E. coli PEP-protein phosphotransferase system enzyme I (AAC76929.1); Blastp hit to AAC76929.1 (711 aa), 90% identity in aa 1 - 711.
   
 
 0.612
sodB
Iron superoxide dismutase; Destroys superoxide anion radicals which are normally produced within the cells and which are toxic to biological systems; Belongs to the iron/manganese superoxide dismutase family.
  
 
 0.608
gltB
Similar to E. coli glutamate synthase, large subunit (AAC76244.1); Blastp hit to AAC76244.1 (1517 aa), 95% identity in aa 32 - 1517.
    
 
 0.593
crp
Catabolite activator protein (CAP); A global transcription regulator. Complexes with cyclic AMP (cAMP) which allosterically activates DNA binding to regulate transcription. It can act as an activator, repressor, coactivator or corepressor. Induces a severe bend in DNA. Acts as a negative regulator of its own synthesis as well as for adenylate cyclase (cyaA), which generates cAMP. Plays a major role in carbon catabolite repression (CCR) (By similarity).
    
 
 0.573
purB
Similar to E. coli adenylosuccinate lyase (AAC74215.1); Blastp hit to AAC74215.1 (456 aa), 94% identity in aa 1 - 456.
   
 
 0.557
lepB
Leader peptidase (signal peptidase I), serine protease; Signal peptidase I. (SW:LEP_SALTY); Belongs to the peptidase S26 family.
   
  
 0.539
argR
Repressor of arg regulon; Negatively controls the expression of the four operons of arginine biosynthesis in addition to the carAB operon. Predominantly interacts with A/T residues in ARG boxes; Belongs to the ArgR family.
      
 0.526
Your Current Organism:
Salmonella enterica Typhimurium
NCBI taxonomy Id: 99287
Other names: S. enterica subsp. enterica serovar Typhimurium str. LT2, Salmonella enterica subsp. enterica serovar Typhimurium LT2, Salmonella enterica subsp. enterica serovar Typhimurium str. LT2, Salmonella enterica subsp. enterica serovar Typhimurium strain LT2, Salmonella enterica subsp. enterica serovar Typhimurium strain LT2-LTL2, Salmonella typhimurium LT2
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