METHOD FOR SPECIFIC CLEAVAGE OF C(ALPHA)-C BOND AND SIDE CHAIN OF PROTEIN AND PEPTIDE, AND METHOD FOR DETERMINING AMINO ACID SEQUENCE
    1.
    发明公开
    METHOD FOR SPECIFIC CLEAVAGE OF C(ALPHA)-C BOND AND SIDE CHAIN OF PROTEIN AND PEPTIDE, AND METHOD FOR DETERMINING AMINO ACID SEQUENCE 审中-公开
    特异性裂解蛋白质和肽的C(α)-C键和侧链的方法以及测定氨基酸序列的方法

    公开(公告)号:EP3246706A1

    公开(公告)日:2017-11-22

    申请号:EP17170513.0

    申请日:2017-05-10

    Abstract: The present invention provides a method for specifically cleaving a Cα-C bond of a peptide backbone and/or a side chain of a protein and a peptide, and a method for determining amino acid sequences of protein and peptide. A method for specifically cleaving a Cα-C bond of a peptide backbone and/or a side chain bond of a protein or a peptide, comprising irradiating a protein or a peptide with laser light in the presence of at least one hydroxynitrobenzoic acid selected from the group consisting of 3-hydroxy-2-nitrobenzoic acid, 4-hydroxy-3-nitrobenzoic acid, 5-hydroxy-2-nitrobenzoic acid, 3-hydroxy-5-nitrobenzoic acid, and 4-hydroxy-2-nitrobenzoic acid. A method for determining an amino acid sequence of a protein or a peptide, comprising irradiating a protein or a peptide with laser light in the presence of the above specific hydroxynitrobenzoic acid to specifically cleave a Cα-C bond of a peptide backbone and/or a side chain bond, and analyzing generated fragment ions by mass spectrometry.

    Abstract translation: 本发明提供了特异性切割肽骨架和/或蛋白质和肽的侧链的Cα-C键的方法,以及测定蛋白质和肽的氨基酸序列的方法。 一种用于特异性切割蛋白质或肽的肽主链和/或侧链键的Cα-C键的方法,其包括在至少一种选自以下的羟基硝基苯甲酸存在下用激光照射蛋白质或肽: 由3-羟基-2-硝基苯甲酸,4-羟基-3-硝基苯甲酸,5-羟基-2-硝基苯甲酸,3-羟基-5-硝基苯甲酸和4-羟基-2-硝基苯甲酸组成的组。 一种确定蛋白质或肽的氨基酸序列的方法,包括在上述特定的羟基硝基苯甲酸存在下用激光照射蛋白质或肽以特异性切割肽骨架和/或肽的Cα-C键 侧链键,并通过质谱分析产生的碎片离子。

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