期刊
BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH
卷 1694, 期 1-3, 页码 207-217出版社
ELSEVIER
DOI: 10.1016/j.bbamcr.2004.04.005
关键词
bacterial flagellum; type III protein export; FliI ATPase; morphogenesis; chaperone
资金
- NIAID NIH HHS [AI12202] Funding Source: Medline
Bacterial flagella, unlike eukaryotic flagella, are largely external to the cell and therefore many of their subunits have to be exported. Export is ATP-driven. In Salmonella, the bacterium on which this chapter largely focuses, the apparatus responsible for flagellar protein export consists of six membrane components, three soluble components and several substrate-specific chaperones. Other flagellated eubacteria have similar systems. The membrane components of the export apparatus are housed within the flagellar basal body and deliver their substrates into a channel or lumen in the nascent structure from which point they diffuse to the far end and assemble. Both on the basis of sequence similarities of several components and structural similarities, the flagellar protein export systems clearly belong to the type III superfamily, whose other members are responsible for secretion of virulence factors by many species of pathogenic bacteria. (C) 2004 Elsevier B.V. All rights reserved.
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