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entB protein (Escherichia coli K12 MG1655) - STRING interaction network
"entB" - Enterobactin synthase component B in Escherichia coli K12 MG1655
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Predicted Interactions
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entBEnterobactin synthase component B; Involved in the biosynthesis of the siderophore enterobactin (enterochelin), which is a macrocyclic trimeric lactone of N-(2,3-dihydroxybenzoyl)-serine. The serine trilactone serves as a scaffolding for the three catechol functionalities that provide hexadentate coordination for the tightly ligated iron(2+) atoms. EntB is a bifunctional protein that serves as an isochorismate lyase and an aryl carrier protein (ArCP). Catalyzes the conversion of isochorismate to 2,3-dihydro-2,3- dihydroxybenzoate (2,3-diDHB), the precursor of 2,3- dihydroxybenzoate (DH [...] (285 aa)    
Predicted Functional Partners:
entE
Enterobactin synthase component E; Involved in the biosynthesis of the siderophore enterobactin (enterochelin), which is a macrocyclic trimeric lactone of N-(2,3-dihydroxybenzoyl)-serine. The serine trilactone serves as a scaffolding for the three catechol functionalities that provide hexadentate coordination for the tightly ligated iron(2+) atoms. EntE proccesses via a two-step adenylation- ligation reaction (bi-uni-uni-bi ping-pong mechanism). First, it catalyzes the activation of the carboxylate group of 2,3- dihydroxy-benzoate (DHB), via a reversible ATP-dependent pyrophosphate exc [...] (536 aa)
  0.999
entA
2,3-dihydro-2,3-dihydroxybenzoate dehydrogenase; Involved in the biosynthesis of the siderophore enterobactin (enterochelin), which is a macrocyclic trimeric lactone of N-(2,3-dihydroxybenzoyl)-serine. Catalyzes the reversible NAD-dependent oxidation of the C3-hydroxyl group of 2,3-dihydro-2,3-dihydroxybenzoate (2,3-diDHB), producing the transient intermediate 2-hydroxy-3-oxo-4,6-cyclohexadiene-1- carboxylate, which undergoes rapid aromatization to the final product, 2,3-dihydroxybenzoate (2,3-DHB). Only the compounds with a C3-hydroxyl group such as methyl 2,3-dihydro-2,3- dihydroxybe [...] (248 aa)
 
  0.999
entC
Isochorismate synthase EntC; Involved in the biosynthesis of the siderophore enterobactin (macrocyclic trimeric lactone of N-(2,3- dihydroxybenzoyl)-serine). Catalyzes the reversible conversion of chorismate to isochorismate (391 aa)
  0.999
entF
Enterobactin synthase component F; Activates the carboxylate group of L-serine via ATP- dependent PPi exchange reactions to the aminoacyladenylate, preparing that molecule for the final stages of enterobactin synthesis. Holo-EntF acts as the catalyst for the formation of the three amide and three ester bonds present in the cyclic (2,3- dihydroxybenzoyl)serine trimer enterobactin, using seryladenylate and acyl-holo-EntB (acylated with 2,3-dihydroxybenzoate by EntE) (1293 aa)
 
 
  0.999
entH
Proofreading thioesterase EntH; Required for optimal enterobactin synthesis. Acts as a proofreading enzyme that prevents EntB misacylation by hydrolyzing the thioester bound existing between EntB and wrongly charged molecules. Displays esterase activity toward a wide range of substrates, including acyl-CoAs and aryl-CoAs (137 aa)
   
 
  0.999
entD
Enterobactin synthase component D; Involved in the biosynthesis of the siderophore enterobactin (enterochelin), which is a macrocyclic trimeric lactone of N-(2,3-dihydroxybenzoyl)-serine. The serine trilactone serves as a scaffolding for the three catechol functionalities that provide hexadentate coordination for the tightly ligated iron(2+) atoms. Plays an essential role in the assembly of the enterobactin by catalyzing the transfer of the 4’- phosphopantetheine (Ppant) moiety from coenzyme A to the apo- domains of both EntB (ArCP domain) and EntF (PCP domain) to yield their holo-form [...] (206 aa)
 
 
  0.998
menF
Isochorismate synthase MenF; Catalyzes the conversion of chorismate to isochorismate. Can also catalyze the reverse reaction, but with a lower efficiency (431 aa)
  0.984
fepB
Ferrienterobactin-binding periplasmic protein; Binds ferrienterobactin; part of the binding-protein- dependent transport system for uptake of ferrienterobactin (318 aa)
 
   
  0.967
ybdZ
Enterobactin biosynthesis protein YbdZ; Involved in the biosynthesis of the siderophore enterobactin (enterochelin), which is a macrocyclic trimeric lactone of N-(2,3-dihydroxybenzoyl)-serine. Plays a role in the catalytic function of EntF. It is required for adenylation of amino acids in non-ribosomal peptide biosynthesis (72 aa)
 
   
  0.965
fes
Enterochelin esterase; Upon internalization, ferric enterobactin is processed via an exquisitely specific pathway that is dependent on FES activity, making iron available for metabolic use (400 aa)
 
   
  0.959
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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