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Weber-Sparenberg C Pöplau P Brookman H Rochón M Möckel C Nietschke M Jung H 《Archives of microbiology》2006,186(4):307-316
Transport of flagellar structural proteins beyond the cytoplasmic membrane is accomplished by a type III secretory pathway [flagellar type III secretion system (fTTSS)]. The mechanism of substrate recognition by the fTTSS is still enigmatic. Using the hook scaffolding protein FlgD of Escherichia coli as a model substrate, it is demonstrated that the export signal is contained within the N-terminal 71 amino acids of FlgD. Analysis of frame-shift mutations and alterations of the nucleotide sequence suggest a proteinaceous nature of the signal. Furthermore, the physicochemical properties of the first about eight amino acids are crucial for export. 相似文献
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