Article ; Online: Transmembrane substrates of type three secretion system injectisomes.
Microbiology (Reading, England)
2023 Volume 169, Issue 1
Abstract: The type three secretion system injectisome of Gram-negative bacterial pathogens injects virulence proteins, called effectors, into host cells. Effectors of mammalian pathogens carry out a range of functions enabling bacterial invasion, replication, ... ...
Abstract | The type three secretion system injectisome of Gram-negative bacterial pathogens injects virulence proteins, called effectors, into host cells. Effectors of mammalian pathogens carry out a range of functions enabling bacterial invasion, replication, immune suppression and transmission. The injectisome secretes two translocon proteins that insert into host cell membranes to form a translocon pore, through which effectors are delivered. A subset of effectors also integrate into infected cell membranes, enabling a unique range of biochemical functions. Both translocon proteins and transmembrane effectors avoid cytoplasmic aggregation and integration into the bacterial inner membrane. Translocated transmembrane effectors locate and integrate into the appropriate host membrane. In this review, we focus on transmembrane translocon proteins and effectors of bacterial pathogens of mammals. We discuss what is known about the mechanisms underlying their membrane integration, as well as the functions conferred by the position of injectisome effectors within membranes. |
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MeSH term(s) | Animals ; Type III Secretion Systems/genetics ; Type III Secretion Systems/metabolism ; Cell Membrane/metabolism ; Membrane Proteins/genetics ; Membrane Proteins/metabolism ; Virulence ; Gram-Negative Bacteria/metabolism ; Bacterial Proteins/genetics ; Bacterial Proteins/metabolism ; Mammals/metabolism |
Chemical Substances | Type III Secretion Systems ; Membrane Proteins ; Bacterial Proteins |
Language | English |
Publishing date | 2023-01-28 |
Publishing country | England |
Document type | Review ; Journal Article ; Research Support, Non-U.S. Gov't |
ZDB-ID | 1180712-x |
ISSN | 1465-2080 ; 1350-0872 |
ISSN (online) | 1465-2080 |
ISSN | 1350-0872 |
DOI | 10.1099/mic.0.001292 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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