期刊
TOXINS
卷 5, 期 6, 页码 1167-1179出版社
MDPI
DOI: 10.3390/toxins5061167
关键词
cytotoxic necrotizing factor; Pasteurella multocida toxin; dermonecrotic toxin; endosomal acidification; intoxication; drug-delivery; toxin-based therapeutics
资金
- NIH/NIAID [AI038395]
Cytotoxic necrotizing factors from E. coli (CNF1, CNF2) and Yersinia (CNFy) share N-terminal sequence similarity with Pasteurella multocida toxin (PMT). This common N-terminal region harbors the receptor-binding and translocation domains that mediate uptake and delivery of the C-terminal catalytic cargo domains into the host cytosol. Subtle variations in the N-terminal similar to 500 amino acids of CNFs and PMT could allow for selective recognition of cellular receptors and thus, selective target cell specificity. Through studies with cellular inhibitors, we have identified an additional novel function for this region in modulating responses of these toxin proteins to changes in pH during intoxication and delivery of the catalytic cargo domain into the cytosol.
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