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© Research
Publication : Research in microbiology

The type II secretion system – a dynamic fiber assembly nanomachine

Team: Macromolecular Systems
Team: Biochemistry of Macromolecular Interactions
Member: Olivera Francetic
Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Research in microbiology - 27 Mar 2013

Campos M, Cisneros DA, Nivaskumar M, Francetic O

Link to Pubmed [PMID] – 23542426

Res. Microbiol. 2013 Jul-Aug;164(6):545-55

Type II secretion systems (T2SSs) share common origins and structure with archaeal flagella (archaella) and pili, bacterial competence systems and type IV pili. All of these systems use a conserved ATP-powered machinery to assemble helical fibers that are anchored in the plasma membrane. The T2SSs assemble pseudopili, periplasmic filaments that promote extracellular secretion of folded periplasmic proteins. Comparative analysis of T2SSs and related fiber assembly nanomachines might provide important clues on their functional specificities and dynamics. This review focuses on recent developments in the study of pseudopilus structure and biogenesis, and discusses mechanistic models of pseudopilus function in protein secretion.