Type III protein secretion mechanism in mammalian and plant pathogens.

Journal Article (Review;Journal Article)

The type III protein secretion system (TTSS) is a complex organelle in the envelope of many Gram-negative bacteria; it delivers potentially hundreds of structurally diverse bacterial virulence proteins into plant and animal cells to modulate host cellular functions. Recent studies have revealed several basic features of this secretion system, including assembly of needle/pilus-like secretion structures, formation of putative translocation pores in the host membrane, recognition of N-terminal/5' mRNA-based secretion signals, and requirement of small chaperone proteins for optimal delivery and/or expression of effector proteins. Although most of our knowledge about the TTSS is derived from studies of mammalian pathogenic bacteria, similar and unique features are learned from studies of plant pathogenic bacteria. Here, we summarize the most salient aspects of the TTSS, with special emphasis on recent findings.

Full Text

Duke Authors

Cited Authors

  • He, SY; Nomura, K; Whittam, TS

Published Date

  • November 2004

Published In

Volume / Issue

  • 1694 / 1-3

Start / End Page

  • 181 - 206

PubMed ID

  • 15546666

Electronic International Standard Serial Number (EISSN)

  • 1878-2434

International Standard Serial Number (ISSN)

  • 0006-3002

Digital Object Identifier (DOI)

  • 10.1016/j.bbamcr.2004.03.011


  • eng