Sequence alignment between 1brb(I) 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: ---------------------------------------AGEPPYTGPCKARIIRYFYNAKAGLCQTFVYGGCRAKRNNFKSAEDCMRTA----------
                                                -----+---------+---------+---------+---------+-----          
                                                    10        20        30        40        50