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References Suggestions


Standard Name


Gene Synonym(s)

ECK4221, b4225, JW4184, chpBK, yjfB, yjfE[1], yjfE

Product Desc.

ChpB transcriptional regulator[2]; ChpB toxin of the ChpB-ChpS toxin-antitoxin system[3];

Component of ChpB-ChpS complex[3]

ChpB toxin and mRNA interferase, antitoxin is ChpS; reversible inhibitor of translation, by mRNA cleavage[4]

Product Synonyms(s)

toxin of the ChpB-ChpS toxin-antitoxin system[1], B4225[2][1], YjfE[2][1], ChpB[2][1], ChpBK[2][1] , chpBK, ECK4221, JW4184, yjfE, b4225

Function from GO

<GO_nr />

Knock-Out Phenotype

transcription unit(s): chpSB[2]

Quick Links

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ChpB(ChpBK) is a sequence-specific (ACY) endoribonuclease.[4]


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  1. 1.0 1.1 1.2 1.3 1.4 1.5 Riley, M. et al. (2006) Nucleic Acids Res 34:1-6 (corrected supplemental data from B. Wanner)
  2. 2.0 2.1 2.2 2.3 2.4 2.5 EcoCyc (release 10.6; 2007) Keseler, IM et al. (2005) Nucleic Acids Res. 33(Database issue):D334-7
  3. 3.0 3.1 EcoCyc (release 11.1; 2007) Keseler, IM et al. (2005) Nucleic Acids Res. 33(Database issue):D334-7
  4. 4.0 4.1 EcoGene: Rudd, KE (2000) EcoGene: a genome sequence database for Escherichia coli K-12. Nucleic Acids Res 28:60-4.