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References Suggestions


Standard Name


Gene Synonym(s)

ECK4340, b4350, JW4313, Hs, hsp, hsr, rm[1]

Product Desc.

host restriction; endonuclease R[2][3];

Component of [[:Category:Complex:EcoKI restriction-modification system|EcoKI restriction-modification system]][3]

Endonuclease R, host restriction of foreign DNA; ClpXP-dependent degradation[4]

Product Synonyms(s)

endonuclease R[1], B4350[2][1], Hsr[2][1], Hsp[2][1], HsdR[2][1] , ECK4340, hsp, hsr, JW4313, b4350

Function from GO

<GO_nr />

Knock-Out Phenotype

transcription unit(s): hsdRMS[3]

Quick Links

porteco.png EcoCyc.gif regulondb.jpg

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HsdR acts as a chaperone in hsdS mutant to allow DNA binding.[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 EcoCyc (release 10.6; 2007) Keseler, IM et al. (2005) Nucleic Acids Res. 33(Database issue):D334-7
  3. 3.0 3.1 3.2 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.