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References Suggestions


Standard Name


Gene Synonym(s)

ECK2250, b2257, JW2251, yfbI, pmrK, orf5[1][2], pbgE1, pqaB

Product Desc.

4-amino-4-deoxy-L-arabinose (L-Ara4N) transferase[2][3]

4-amino-4-deoxy-L-arabinose(Ara4N):Lipid A transferase; modifies lipid A phosphates with aminoarabinose and confers resistance to polymyxin B and cationic antimicrobial peptides; glycolipid donor is undecaprenyl phosphate-alpha-L-Ara4N[4]

Product Synonyms(s)

4-amino-4-deoxy-L-arabinose transferase[1], B2257[2][1], YfbI[2][1], ArnT[2][1], PmrK[2][1], Orf5[2][1] , ECK2250, JW2251, pbgE1, pmrK, pqaB, yfbI, b2257

Function from GO

<GO_nr />

Knock-Out Phenotype

transcription unit(s): yfbE[2]

Quick Links

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Inner membane protein. basRS regulon. Required for survival in PMA-U937 human monocyte macrophage cells in culture. Probable false positive lipoprotein prediction, 12 CM TMs predicted, Cys not conserved.[4]


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  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 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 2.6 2.7 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.