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References Suggestions


Standard Name


Gene Synonym(s)

ECK0142, b0143, JW5808[1], JW5808

Product Desc.

poly(A) polymerase I[2][3]

Poly(A) polymerase; controls plasmid copy number; rare AUU start codon, growth-rate regulated; monomeric[4]

Product Synonyms(s)

poly(A) polymerase I[1], B0143[2][1], PcnB[2][1], PAP I[2][1] , ECK0142, JW5808, b0143

Function from GO

<GO_nr />

Knock-Out Phenotype

transcription unit(s): pcnB-folK[2]

Quick Links

porteco.png EcoCyc.gif regulondb.jpg

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AUU start proven by mutagenesis analysis. PcnB can polyadenylate many mRNAs and it is proposed that Rho-independent transcription terminators serve as polyadenylation signals (Mohanty, 2006).[4]


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  1. 1.0 1.1 1.2 1.3 1.4 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. 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.