生物发生
生物
淀粉样蛋白(真菌学)
功能多样性
有机体
功能(生物学)
生物膜
蛋白质聚集
蛋白质折叠
模式生物
计算生物学
细胞生物学
生物化学
细菌
遗传学
生态学
基因
植物
作者
Luz P. Blanco,Margery L. Evans,Daniel R. Smith,Matthew P. Badtke,Matthew R. Chapman
标识
DOI:10.1016/j.tim.2011.11.005
摘要
Amyloid is a distinct β-sheet-rich fold that many proteins can acquire. Frequently associated with neurodegenerative diseases in humans, including Alzheimer's, Parkinson's and Huntington's diseases, amyloids are traditionally considered the product of protein misfolding. However, the amyloid fold is now recognized as a ubiquitous part of normal cellular biology. Functional amyloids have been identified in nearly all facets of cellular life, with microbial functional amyloids leading the way. Unlike disease-associated amyloids, functional amyloids are assembled by dedicated, directed pathways and ultimately perform a physiological function that benefits the organism. The evolved amyloid assembly and disassembly pathways of microbes have provided novel insights into how cells have harnessed the amyloid assembly process for productive means. An understanding of functional amyloid biogenesis promises to provide a fresh perspective on the molecular events that underlie disease-associated amyloidogenesis. Here, we review functional microbial amyloids with an emphasis on curli fibers and their role in promoting biofilm formation and other community behaviors.
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