Document Detail

Breaking on through to the other side: protein export through the bacterial Sec system.
MedLine Citation:
PMID:  23216251     Owner:  NLM     Status:  In-Data-Review    
More than one-third of cellular proteomes traffic into and across membranes. Bacteria have invented several sophisticated secretion systems that guide various proteins to extracytoplasmic locations and in some cases inject them directly into hosts. Of these, the Sec system is ubiquitous, essential and by far the best understood. Secretory polypeptides are sorted from cytoplasmic ones initially due to characteristic signal peptides. Then they are targeted to the plasma membrane by chaperones/pilots. The translocase, a dynamic nanomachine, lies at the centre of this process and acts as a protein-conducting channel with a unique property; allowing both forward transfer of secretory proteins but also lateral release into the lipid bilayer with high fidelity and efficiency. This process, tightly orchestrated at the expense of energy, ensures fundamental cell processes such as membrane biogenesis, cell division, motility, nutrient uptake and environmental sensing. In the present review, we examine this fascinating process, summarizing current knowledge on the structure, function and mechanics of the Sec pathway.
Katerina E Chatzi; Marios F Sardis; Spyridoula Karamanou; Anastassios Economou
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Biochemical journal     Volume:  449     ISSN:  1470-8728     ISO Abbreviation:  Biochem. J.     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2012-12-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2984726R     Medline TA:  Biochem J     Country:  England    
Other Details:
Languages:  eng     Pagination:  25-37     Citation Subset:  IM    
*Institute of Molecular Biology and Biotechnology-Foundation for Research and Technology, Vassilika Vouton, PO Box 1385, Iraklio, Crete 71110, Greece.
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