PSI Structural Biology Knowledgebase

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id="title" class="nomar"Program for the Characterization of Secreted Effector Proteins

This biological project is composed of investigators from Pacific Northwest Laboratories and  Oregon Health and Science University, and is partnered with the PSI High-Throughtput Structure Determination center MCSG.

Consortia investigators

Joshua Adkins
joshua.adkins@pnl.gov

John Cort
john.cort@pnl.gov

Fred Heffron
heffronf@ohsu.edu

Me-Ann Villanueva
me-ann.villanueva@pnl.gov

Research Description

The multiple mechanisms by which pathogenic enterobacteria of the genus Salmonella infect their host indicate a complex host-pathogen relationship. The pathogen secretes dozens of proteins, termed “effectors”, in an organized strategy to modulate host cell function and evade the host immune response to enable colonization of the host. Recently, we discovered more than 50 new secreted proteins presumably deployed by Salmonella to subvert host cell defense mechanisms, bringing the total number of identified putative secreted effectors to nearly 100. Identifying the host proteins targeted by these putative effectors and determining the nature of these interactions will enable development and testing of mechanistic hypotheses about their modes of action. Our research plan employs a novel high throughput proteomic screening approach to identify effector and host proteins involved in specific host-pathogen interactions and to elucidate the underlying molecular mechanisms behind these interactions. As part of this plan, we will collaborate with the PSI biology network to generate essential structural information to help define the mechanisms by which the pathogen modulates or disrupts host cell functions. The long-term goal is to identify novel therapeutic targets and develop new tools for manipulating the host cell response to infection.

Related Links

Systems Biology of EnteroPathogens

Structural Biology Knowledgebase ISSN: 1758-1338
Funded by a grant from the National Institute of General Medical Sciences of the National Institutes of Health