Sequence alignment between 2a9h(A) and UniProt seq P0A334 (KCSA_STRLI):

P0A334 (KCSA_STRLI): pH-gated potassium channel KcsA from Streptomyces lividans
                 10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+
UniProt: MPPMLSGLLARLVKLLLGRHGSALHWRAAGAATVLLVIVLLAGSYLAVLAERGAPGAQLITYPRALWWSVETATTVGYGDLYPVTLWGRLVAVVVMVAGITSFGLVTAALATWFVGREQERRGHFVRHSEKAAEEAYTRTTRALHERFDRLERMLDDNRR
         .........................................................X..X..X.........................X............X...X..X..................................................
PDB seq: ----------------------ALHWRAAGAATVLLVIVLLAGSYLAVLAERGAPGAALISYPDALWWSVETATTVGYGDLYPVTLWGRCVAVVVMVAGITSYGLVFAAVATWFVGREQ-----------------------------------------
                               -------+---------+---------+---------+---------+---------+---------+---------+---------+---------                                         
                                     30        40        50        60        70        80        90       100       110