Activity, delivery and diversity of Type VI secretion effectors - Archive ouverte HAL Access content directly
Journal Articles Molecular Microbiology Year : 2021

Activity, delivery and diversity of Type VI secretion effectors

Abstract

The bacterial type VI secretion system (T6SS) system is a contractile secretion apparatus that delivers proteins to neighbouring bacterial or eukaryotic cells. Antibacterial effectors are mostly toxins that inhibit growth of other species and help to dominate the niche. A broad variety of these toxins cause cell lysis of the prey cell by disrupting the cell envelope. Other effectors are delivered into the cytoplasm where they affect DNA integrity, cell division or exhaust energy resources. The modular nature of T6SS machinery allows different means of recruitment of toxic effectors to secreted inner tube and spike components that act as carriers. Toxic effectors can be translationally fused to the secreted components or interact with them through specialized structural domains. These interactions can also be assisted by dedicated chaperone proteins. Moreover, conserved sequence motifs in effector-associated domains are subject to genetic rearrangements and therefore engage in diversification of the arsenal of toxic effectors. This review discusses the diversity of T6SS secreted toxins and presents current knowledge about their loading on the T6SS machinery.
Fichier principal
Vignette du fichier
Accepted Jurenas-Manuscript.pdf (2.49 Mo) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-03022028 , version 1 (24-11-2020)

Identifiers

Cite

Dukas Jurėnas, Laure Journet. Activity, delivery and diversity of Type VI secretion effectors. Molecular Microbiology, 2021, 115 (3), pp.383-394. ⟨10.1111/mmi.14648⟩. ⟨hal-03022028⟩
40 View
64 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More