Sequence alignment between 1ejm(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
         .................................................XX...................................X.............
PDB seq: -----------------------------------RPDFCLEPPYTGPCRLRIIRYFYNAKAGLCQTFVYGGCRAKRNNFKSAEDCLRTCGGA-------
                                            ---------+---------+---------+---------+---------+--------       
                                                   510       520       530       540       550