METHOD FOR SEQUENCING A PROTEIN/POLYPEPTIDE USING AEROLYSIN NANOPORES
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United States of America Patent
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Issued Date -
Jul 13, 2023
app pub date -
May 19, 2021
filing date -
Apr 13, 2020
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Abstract
The present invention provides a method for sequencing a protein/polypeptide based on Aerolysin nanopores to achieve specific discrimination of natural amino acids and post-translational modifications thereof and accurate acquisition of a sequence of a single-molecule protein, the method including the following steps: (1) unfolding of the protein; (2) terminus labeling of protein sequencing; (3) protein charge screening; (4) unfolding of a tertiary structure of the polypeptides; (5) orthogonal identification of amino acids; (6) confined perturbation-assisted identification of amino acids; and (7) single-molecule protein sequencing. The present invention aims at sensitive detection of sequence information about 20 amino acids and establishes an innovative method for accurately determining sequences of the amino acids and post-translational modifications of a single protein molecule.
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