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Article dans une revue

Bacterial secretins: Mechanisms of assembly and membrane targeting

Abstract : Secretion systems are employed by bacteria to transport macromolecules across membranes without compromising their integrities. Processes including virulence, colonization, and motility are highly dependent on the secretion of effector molecules toward the immediate cellular environment, and in some cases, into the host cytoplasm. In Type II and Type III secretion systems, as well as in Type IV pili, homomultimeric complexes known as secretins form large pores in the outer bacterial membrane, and the localization and assembly of such 1 MDa molecules often relies on pilotins or accessory proteins. Significant progress has been made toward understanding details of interactions between secretins and their partner proteins using approaches ranging from bacterial genetics to cryo electron microscopy. This review provides an overview of the mode of action of pilotins and accessory proteins for T2SS, T3SS, and T4PS secretins, highlighting recent near-atomic resolution cryo-EM secretin complex structures and underlining the importance of these interactions for secretin functionality.
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Contributeur : Frank Thomas <>
Soumis le : jeudi 11 juin 2020 - 08:34:37
Dernière modification le : mercredi 22 juillet 2020 - 03:13:41




Yuri Rafael de Oliveira Silva, Pauline Macheboeuf, Andréa Dessen, Carlos Contreras-Martel. Bacterial secretins: Mechanisms of assembly and membrane targeting. Protein Science, Wiley, 2020, 29 (4), pp.893-904. ⟨10.1002/pro.3835⟩. ⟨hal-02864317⟩



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