Chains and heterogens:
PDB Chain Sequences:
>1ymiA (A:) sgpvpsrarvytdvnthrpreywdyeshvvewgnqddyqlvrklgrgkysevfeainitn nekvavkilkpvkkkkikreikilenlrggpniitladivkdpvsrtpalvfehvnntdf kqlyqtltdydirfymyeilkaldychsmgimhrdvkphnvlidhehrklrlidwglaef yhpgqeynvrvasryfkgpellvdyqmydysldmwslgcmlasmifrkepffhghdnydq lvriakvlgtedlydyidkynieldprfndilgrhsrkrwerfvhsenqhlvspealdfl dkllrydhqsrltareamehpyfytvvkdqarmg