Sequence alignment between 1b2s(D) and UniProt seq P11540 (BARS_BACAM):

P11540 (BARS_BACAM): Barstar from Bacillus amyloliquefaciens
                 10        20        30        40        50        60        70        80        90
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+
UniProt: MKKAVINGEQIRSISDLHQTLKKELALPEYYGENLDALWDCLTGWVEYPLVLEWRQFEQSKQLTENGAESVLQVFREAKAEGCDITIILS
         ..........................................X...............................................
PDB seq: MKKAVINGEQIRSISDLHQTLKKELALPEYYGENLDALWDCLAGWVEYPLVLEWRQFEQSKQLTENGAESVLQVFREAKAEGCDITIILS
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+
                 10        20        30        40        50        60        70        80        90