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    • 115. 发明申请
    • PROTEIN AGGREGATION DOMAINS AND METHODS OF USE THEREOF
    • 蛋白质聚集域及其使用方法
    • WO2008033451A2
    • 2008-03-20
    • PCT/US2007019910
    • 2007-09-13
    • WHITEHEAD BIOMEDICAL INSTLINDQUIST SUSANTESSIER PETER
    • LINDQUIST SUSANTESSIER PETER
    • C07K14/39C07K14/40C07K14/47G01N33/68
    • C07K14/39C07K14/40C07K14/4711G01N33/6896G01N2333/4709G01N2500/04G01N2800/28G01N2800/2814
    • Using the Sup35 prion proteins of two distantly related yeast species, it is established that prion replication is initiated by small elements of primary sequence, which can be identified using arrays of short peptides. Subtle differences in replication elements govern the formation of distinct aggregate conformations (prion strains) and also determine their species-specific seeding activities. A Sup35 chimera that promiscuously forms prions in more than one species does so by virtue of carrying the replication element of each species. Mutations or conditions that cause the chimera to assemble into distinct prion strains favor recognition of distinct replication elements. Therefore, subtle differences in small sequences that constitute prion replication elements encode important determinants of prion propagation and transmission. The protein aggregation domains, methods for identification thereof, and polypeptides and higher order aggregates including the protein interaction domains, as well as arrays including peptides derived from an aggregation-prone polypeptide are provided.
    • 使用两种相互关联的酵母菌种的Sup35朊病毒蛋白,确定了朊病毒复制由初级序列的小元件引发,可以使用短肽阵列鉴定。 复制元件的微妙差异控制着不同的聚集体构象(朊病毒株)的形成,并且还决定了它们的物种特异性种子活动。 通过携带每种物种的复制元件,在一种以上物种中混合形成朊病毒的Sup35嵌合体也是如此。 导致嵌合体组装成不同朊病毒菌株的突变或条件有利于识别不同的复制元件。 因此,构成朊病毒复制元件的小序列的微妙差异编码了朊病毒传播和传播的重要决定因素。 提供了蛋白质聚集域,鉴定方法,以及包括蛋白质相互作用区域的多肽和更高级聚集体,以及包含衍生自聚集多肽的肽的阵列。