Sequence alignment between 4zr6(A) and UniProt seq P58154 (ACHP_LYMST):

P58154 (ACHP_LYMST): Acetylcholine-binding protein from Lymnaea stagnalis
                 10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220         
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------
UniProt: MRRNIFCLACLWIVQACLSLDRADILYNIRQTSRPDVIPTQRDRPVAVSVSLKFINILEVNEITNEVDVVFWQQTTWSDRTLAWNSSHSPDQVSVPISSLWVPDLAAYNAISKPEVLTPQLARVVSDGEVLYMPSIRQRFSCDVSGVDTESGATCRIKIGSWTHHSREISVDPTTENSDDSEYFSQYSRFEILDVTQKKNSVTYSCCPEAYEDVEVSLNFRKKGRSEIL
         ........................................XXX...................................................................................................................................XXXXX..................................................
PDB seq: --------------------DRADILYNIRQTSRPDVIPT---RPVAVSVSLKFINILEVNEITNEVDVVFWQQTTWSDRTLAWNSSHSPDQVSVPISSLWVPDLAAYNAISKPEVLTPQLARVVSDGEVLYMPSIRQRFSCDVSGVDTESGATCRIKIGSWTHHSREISVDPT-----DSEYFSQYSRFEILDVTQKKNSVTYSCCPEAYEDVEVSLNFRKK------
                             --------+---------+-   -----+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+-----     ---------+---------+---------+---------+----      
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150                 170       180       190       200