Method for specific cleavage of C alpha-C bond and side chain of protein and peptide, and method for determining amino acid sequence

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United States of America Patent

PATENT NO 10626141
SERIAL NO

15594461

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Abstract

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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.

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Patent Owner(s)

  • SHIMADZU CORPORATION; NATIONAL UNIVERSITY OF CORPORATION HIROSHIMA UNIVERSITY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fukuyama, Yuko Kyoto, JP 19 12
Izumi, Shunsuke Higashihiroshima, JP 11 45
Tanaka, Koichi Kyoto, JP 414 4190

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