Chains and heterogens:
PDB Chain Sequences:
>1ah3A (A:) ashlvlytgakmpilglgtwksppgkvteavkvaidlgyrhidcahvyqnenevglglqe klqgqvvkredlfivsklwctdheknlvkgacqttlrdlkldyldlylihwptgfkpgkd pfpldgdgnvvpdesdfvetweameelvdeglvkaigvsnfnhlqvekilnkpglkykpa vnqievhpyltqeklieyckskgivvtaysplgspdrpwakpedpslledprikaiaaky nkttaqvlirfpmqrnlivipksvtperiaenfqvfdfelspedmntllsynrnwrvcal mscashkdypfheey