Figure 4
From: Genetic regulation of MUC1 alternative splicing in human tissues

Amino-acid sequences of the N-terminal ends of the a, b, c, and d encoded peptides and positions of the observed and/or predicted peptide cleavage. The sequence that undergoes alternative splicing is shown in grey on the a transcript. The upward arrows show the positions of predicted, or in the case of the b transcript the experimentally observed, peptide cleavage sites.