Sequence alignment between 1ylc(B) and UniProt seq P00974 (BPT1_BOVIN):

P00974 (BPT1_BOVIN): Pancreatic trypsin inhibitor from Bos taurus
                 10        20        30        40        50        60        70        80        90       100
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+
UniProt: MKMSRLCLSVALLVLLGTLAASTPGCDTSNQAKAQRPDFCLEPPYTGPCKARIIRYFYNAKAGLCQTFVYGGCRAKRNNFKSAEDCMRTCGGAIGPWENL
         .......................................X........................X....................X...X..........
PDB seq: -----------------------------------RPDFXLEPPYTGPCKARIIRYFYNAKAGLXQTFVYGGCRAKRNNFKSAEDXMRTXG---------
                                            ---------+---------+---------+---------+---------+------         
                                                    10        20        30        40        50