Sequence alignment between 1b2a(B) and UniProt seq P01315 (INS_PIG):

P01315 (INS_PIG): Insulin from Sus scrofa
                 10        20        30        40        50        60        70        80        90       100        
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+--------
UniProt: MALWTRLLPLLALLALWAPAPAQAFVNQHLCGSHLVEALYLVCGERGFFYTPKARREAENPQAGAVELGGGLGGLQALALEGPPQKRGIVEQCCTSICSLYQLENYCN
PDB seq: ------------------------FVNQHLCGSHLVEALYLVCGERGFFYTPKA------------------------------------------------------
                                 ---------+---------+---------+                                                      
                                         10        20        30