Northwestern Events Calendar


Department of Microbiology-Immunology: Caleb Stubbs

When: Tuesday, January 21, 2020
12:00 PM - 1:00 PM  

Where: Simpson Querrey Biomedical Research Center, SQBR Auditorium, 303 E. Superior Street, Chicago, IL 60611 map it

Audience: Faculty/Staff - Post Docs/Docs - Graduate Students

Contact: Dr. Karla Satchell   312.503.2162

Group: Department of Microbiology-Immunology Seminars/Events

Category: Lectures & Meetings


Title: MARTX Toxin Effector from Vibrio vulnificus Inhibits Cell Growth In Colon Cancer Cells

Speaker: Caleb Stubbs, Graduate Student, Driskill Graduate Program in the Life Sciences (DGP)

Host:  Karla Satchell, PhD


The multifunctional-autoprocessing repeats-in-toxin (MARTX) is the main virulence factor found in Vibrio vulnificus. Secretion of the MARTX toxin unleashes several unique effector domains into host cells that can negatively affect cytoskeletal structure, cell proliferation, and cell survival. An effector found on the MARTX toxin of V. vulnificus, Ras/Rap1 specific endopeptidase (RRSP), has been shown to provide increased virulence in mice compared to strains lacking this effector. Our work focuses on elucidating the mechanisms behind RRSP disruption of Ras signaling and inhibition of cell growth in colon cancer cells.



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