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Methods of screening molecular libraries for active molecules that restore the function of target proteins and peptides that restore the function of mutant p53
Methods of screening molecular libraries for active molecules that restore the function of target proteins and peptides that restore the function of mutant p53
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机译:筛选分子库中可恢复靶蛋白功能的活性分子和可恢复突变p53功能的肽的方法
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摘要
The present invention provides a method of screening a library of peptides of formula M-G/M/V-(X)n wherein n is an integer from 3 to 18, M is methionine, G is glycine, V is valine and each X, which may be the same or different, is any genetically encoded amino acid, which method comprises: a) transforming a host cell population with a library of nucleic acid constructs which can express free peptides of formula M-G/M/V-(X)n; b) culturing the transformed host cells under conditions suitable for intra-cellular expression of the peptides of formula M-G/M/V- (X)n; and C) analysing the host cell population to determine the effect of the peptides of formula M-G/M/V- (X) n on a reporter system. Also describe are a library of nucleic acid constructs which can express free peptides in an intra-cellular environment, said peptides having the sequence M-G/M/V-(X)n, wherein n is an integer from 3 to 18, M is methionine, G is glycine, V is valine and each X, which may be the same or different, is any genetically encoded amino acid; and a method of generating a library of nucleic acid constructs which can express free peptides in an intra-cellular environment, which method comprises synthesising a library of DNA molecules which include the nucleotide sequence ATGGGA(NNK)n, wherein n is an integer from 3 to 18, N is A, C, T or G and K is G or T and wherein each NNK triplet may be the same or different, and inserting a library of synthesised DNA fragments which each includes a nucleotide sequence of formula ATGGGA(NNK)n into expression vectors.
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机译:本发明提供了筛选式MG / M / V-(X)n的肽文库的方法,其中n是3至18的整数,M是蛋氨酸,G是甘氨酸,V是缬氨酸,并且每个X,可以是相同或不同的,是任何基因编码的氨基酸,该方法包括:a)用可表达式MG / M / V-(X)n的游离肽的核酸构建体文库转化宿主细胞群; b)在适于细胞内表达式M-G / M / V-(X)n的肽的条件下培养转化的宿主细胞; C)分析宿主细胞群以确定式M-G / M / V-(X)n的肽对报道分子系统的作用。还描述了核酸构建体的文库,其可以在细胞内环境中表达游离肽,所述肽具有序列MG / M / V-(X)n,其中n是3至18的整数,M是蛋氨酸。 ,G是甘氨酸,V是缬氨酸,并且每个X可以相同或不同,其是任何遗传编码的氨基酸;以及产生可在细胞内环境中表达游离肽的核酸构建体文库的方法,该方法包括合成包含核苷酸序列ATGGGA(NNK)n的DNA分子文库,其中n为3的整数18至18,N是A,C,T或G,K是G或T,其中每个NNK三联体可以相同或不同,并插入一个合成的DNA片段文库,每个片段均包含式ATGGGA(NNK)的核苷酸序列n成为表达载体。
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