Sequence alignment between 2h9c(A) and UniProt seq Q51507 (PCHB_PSEAE):

Q51507 (PCHB_PSEAE): Isochorismate pyruvate lyase from Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)
                 10        20        30        40        50        60        70        80        90       100 
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+-
UniProt: MKTPEDCTGLADIREAIDRIDLDIVQALGRRMDYVKAASRFKASEAAIPAPERVAAMLPERARWAEENGLDAPFVEGLFAQIIHWYIAEQIKYWRQTRGAA
         .........................................XXXXXXXX....................................................
PDB seq: MKTPEDCTGLADIREAIDRIDLDIVQALGRRMDYVKAASRF--------APERVAAMLPERARWAEENGLDAPFVEGLFAQIIHWYIAEQIKYWRQ-----
         ---------+---------+---------+---------+-        +---------+---------+---------+---------+------     
                 10        20        30        40        50        60        70        80        90