Secretion systems and secreted proteins in gram-negative entomopathogenic bacteria: Their roles in insect virulence and beyond

Rebecca McQuade, S Patricia Stock

Research output: Contribution to journalReview article

6 Scopus citations


Many Gram-negative bacteria have evolved insect pathogenic lifestyles. In all cases, the ability to cause disease in insects involves specific bacterial proteins exported either to the surface, the extracellular environment, or the cytoplasm of the host cell. They also have several distinct mechanisms for secreting such proteins. In this review, we summarize the major protein secretion systems and discuss examples of secreted proteins that contribute to the virulence of a variety of Gram-negative entomopathogenic bacteria, including Photorhabdus, Xenorhabdus, Serratia, Yersinia, and Pseudomonas species. We also briefly summarize two classes of exported protein complexes, the PVC-like elements, and the Tc toxin complexes that were first described in entomopathogenic bacteria.

Original languageEnglish (US)
Article number68
Issue number2
Publication statusPublished - Jun 19 2018



  • Entomopathogens
  • Gram-negative bacteria
  • Host interactions
  • Secretion systems

ASJC Scopus subject areas

  • Insect Science

Cite this