Sequence alignment between 1pce(A) and UniProt seq P37109 (ISK4_PIG):

P37109 (ISK4_PIG): Serine protease inhibitor Kazal-type 4 from Sus scrofa
                 10        20        30        40        50        60        70        80      
         ---------+---------+---------+---------+---------+---------+---------+---------+------
UniProt: MAVRLWVVALALAALFIVDREVPVSAEKQVFSRMPICEHMTESPDCSRIYDPVCGTDGVTYESECKLCLARIENKQDIQIVKDGEC
PDB seq: --------------------------EKQVFSRMPICEHMTESPDCSRIYDPVCGTDGVTYESECKLCLARIENKQDIQIVKDGEC
                                   ---------+---------+---------+---------+---------+---------+
                                           10        20        30        40        50        60