| abstract |
The present disclosure provides methods of selectively label an amino acid residue on a peptide by replacing a post translational modification with a labeling moiety and sequencing the peptide to obtain the location of the amino acid residue and the identity of the post translational modification. In some aspects, the disclosure also provides methods of identifying the position, quantity, the identity of a post translational modification, or any combination thereof, in peptides which may be used for therapeutic purposes. |