Sequence alignment between 2f91(B) and UniProt seq O46162 (SGP1_SCHGR):

O46162 (SGP1_SCHGR): Serine protease inhibitor I/II from Schistocerca gregaria
                 10        20        30        40        50        60        70        80        90  
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+--
UniProt: MKLALALCAAFLLVVLVQAEQECTPGQTKKQDCNTCNCTPTGVWACTRKGCPPHKREVTCEPGTTFKDKCNTCRCGSDGKSAACTLKACPQK
PDB seq: --------------------QECTPGQTKKQDCNTCNCTPTGVWACTRKGCPP---------------------------------------
                             --------+---------+---------+----                                       
                                    10        20        30