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Detection of Phosphorylation Post-translational Modifications Along Single Peptides with Nanopores

Overview
Journal Nat Biotechnol
Specialty Biotechnology
Date 2023 Jun 29
PMID 37386295
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Abstract

Current methods to detect post-translational modifications of proteins, such as phosphate groups, cannot measure single molecules or differentiate between closely spaced phosphorylation sites. We detect post-translational modifications at the single-molecule level on immunopeptide sequences with cancer-associated phosphate variants by controllably drawing the peptide through the sensing region of a nanopore. We discriminate peptide sequences with one or two closely spaced phosphates with 95% accuracy for individual reads of single molecules.

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