Calcium Is Essential for the Major Pseudopilin in the Type 2 Secretion System
نویسندگان
چکیده
منابع مشابه
Calcium is essential for the major pseudopilin in the type 2 secretion system.
The pseudopilus is a key feature of the type 2 secretion system (T2SS) and is made up of multiple pseudopilins that are similar in fold to the type 4 pilins. However, pilins have disulfide bridges, whereas the major pseudopilins of T2SS do not. A key question is therefore how the pseudopilins, and in particular, the most abundant major pseudopilin, GspG, obtain sufficient stability to perform t...
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Minor pseudopilin self-assembly primes type II secretion pseudopilus elongation.
In Gram-negative bacteria, type II secretion systems (T2SS) assemble inner membrane proteins of the major pseudopilin PulG (GspG) family into periplasmic filaments, which could drive protein secretion in a piston-like manner. Three minor pseudopilins PulI, PulJ and PulK are essential for protein secretion in the Klebsiella oxytoca T2SS, but their molecular function is unknown. Here, we demonstr...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 2009
ISSN: 0021-9258
DOI: 10.1074/jbc.c109.037655