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Gene Review

traA  -  hypothetical protein

Enterococcus faecium

 
 
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Disease relevance of traA

 

High impact information on traA

  • Conjugative transfer of a bacteriocin plasmid, pPD1, of Enterococcus faecalis is induced in response to a peptide sex pheromone, cPD1, secreted from plasmid-free recipient cells. cPD1 is taken up by a pPD1 donor cell and binds to an intracellular receptor, TraA [1].
  • The cell extract of a strain carrying the traA-bearing multicopy plasmid (pDLHH21) also exhibited high [3H]cPD1-binding activity [3].
  • Electrophoretic mobility shift assays indicated that the TraA relaxase, the first gene of the tra operon, binds to the tra promoter P(tra), which partially overlaps with the origin of transfer (oriT) [2].
 

Analytical, diagnostic and therapeutic context of traA

  • In vitro studies that included development of a DNA-associated protein-tag affinity chromatography technique showed that TraA (37.9 kDa) binds directly to cAD1 near its carboxyl-terminal end and, as a consequence, loses its affinity for DNA [4].
  • Gel mobility shift assays indicated that TraA is bound to a traA-ipd intergenic region, which is essential for cPD1 response [1].

References

 
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