Sequence alignment between 1v5i(B) and UniProt seq Q7M4T6 (PIA1_PLEOS):

Q7M4T6 (PIA1_PLEOS): Serine proteinase inhibitor IA-1 from Pleurotus ostreatus
                 10        20        30        40        50        60        70      
         ---------+---------+---------+---------+---------+---------+---------+------
UniProt: SAGKFIVIFKNDVSEDKIRETKDEVIAEGGTITNEYNMPGMKGFAGELTPQSLTKFQGLQGDLIDSIEEDGIVTTQ
         ......................................................................XXXXXX
PDB seq: SAGKFIVIFKNDVSEDKIRETKDEVIAEGGTITNEYNMPGMKGFAGELTPQSLTKFQGLQGDLIDSIEEDHVAHAY
         ---------+---------+---------+---------+---------+---------+---------+------
                 10        20        30        40        50        60        70