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Phage Sf6 ejection mechanisms

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  • UserProfessor Kristin N. Parent, Michigan State University, East Lansing, United States
  • ClockTuesday 17 January 2017, 15:30-16:00
  • HouseOnline.

If you have a question about this talk, please contact Ilana Spilka .

Outer membrane proteins A and C mediate Sf6 infection by dramatically increasing the rate and efficiency of genome ejection. I will describe a combination of in vivo studies with omp null mutants of Shigella flexneri, including classic phage assays and time-lapse fluorescence microscopy to monitor genome ejection at the single virion level, and cryo-electron tomography of phage โ€œinfectingโ€ outer membrane vesicles. In addition, mutagenesis studies have demonstrated key regions in OmpA that mediate infection. We conclude that Sf6 phage entry utilizes either outer membrane proteins A or C, with outer membrane protein A being the preferred receptor.

This talk is part of the Bacteriophage 2017 series.

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