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Gene Review: 

traD  -  conjugal transfer protein TraD

Escherichia coli

 
 
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High impact information on traD

  • Comparison of TraM to its Glu88 mutants predicted to stabilize the helical structure suggests that the protonated state is the active form for binding TraD in conjugation [1].
  • TraM is essential for F plasmid-mediated bacterial conjugation, where it binds to the plasmid DNA near the origin of transfer, and recognizes a component of the transmembrane DNA transfer complex, TraD [1].
  • We have now assigned the tra proteins to cytoplasm (TraIp and 2b), inner membrane (TraEp, TraMp, and TraSp), and outer membrane (6e, TraAp, TraBp, TraJp, TraKp, TraLp, and TraTp). two proteins, TraDp and 6d, were associated with both inner and outer membranes [2].

References

  1. Protonation-mediated structural flexibility in the F conjugation regulatory protein, TraM. Lu, J., Edwards, R.A., Wong, J.J., Manchak, J., Scott, P.G., Frost, L.S., Glover, J.N. EMBO J. (2006) [Pubmed]
  2. Export without proteolytic processing of inner and outer membrane proteins encoded by F sex factor tra cistrons in Escherichia coli minicells. Achtman, M., Manning, P.A., Edelbluth, C., Herrlich, P. Proc. Natl. Acad. Sci. U.S.A. (1979) [Pubmed]
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