Chains and heterogens:
PDB Chain Sequences:
>1pty_ (-) memekefeqidksgswaaiyqdirheasdfpcrvaklpknknrnryrdvspfdhsriklh qedndyinaslikmeeaqrsyiltqgplpntcghfwemvweqksrgvvmlnrvmekgslk caqywpqkeekemifedtnlkltlisediksyytvrqlelenlttqetreilhfhyttwp dfgvpespasflnflfkvresgslspehgpvvvhssagigrsgtfcladtclllmdkrkd pssvdikkvllemrkfrmgliqtadqlrfsylaviegakfimgdssvqdqwkelshedle pppehipppprppkrilephn
>1pty_ (-) emekefeqidksgswaaiyqdirheasdfpcrvaklpknknrnryrdvspfdhsriklhq edndyinaslikmeeaqrsyiltqgplpntcghfwemvweqksrgvvmlnrvmekgslkc aqywpqkeekemifedtnlkltlisediksyytvrqlelenlttqetreilhfhyttwpd fgvpespasflnflfkvresgslspehgpvvvhssagigrsgtfcladtclllmdkrkdp ssvdikkvllemrkfrmgliqtadqlrfsylaviegakfimgdssvqdqwkelshedl