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Analysis of protein isoforms formed by alternative splicing. A, schematic of the four isoforms of the HP1BP3 protein. Asterisks indicate the location of identified peptides. SEC elution profiles for the canonical sequence and isoforms 2 and 5 (B) and the SEC elution profile for isoform 3 (C) are demonstrated as line graphs with the normalized peptide count (y-axis) plotted for each SEC fraction number (x-axis). Error bars denote the standard deviation from the mean.
