Chains and heterogens:
PDB Chain Sequences:
>1pynA (A:) memekefeqidksgswaaiyqdirheasdfpcrvaklpknknrnryrdvspfdhsriklh qedndyinaslikmeeaqrsyiltqgplpntcghfwemvweqksrgvvmlnrvmekgslk caqywpqkeekemifedtnlkltlisediksyytvrqlelenlttqetreilhfhyttwp dfgvpespasflnflfkvresgslspehgpvvvhcsagigrsgtfcladtclllmdkrkd pssvdikkvllemrkfrmgliqtadqlrfsylaviegakfimgdssvqdqwkelshedle pppehipppprppkrilephn
>1pynA (A:) emekefeqidksgswaaiyqdirheasdfpcrvaklpknknrnryrdvspfdhsriklhq edndyinaslikmeeaqrsyiltqgplpntcghfwemvweqksrgvvmlnrvmekgslkc aqywpqkeekemifedtnlkltlisediksyytvrqlelenlttqetreilhfhyttwpd fgvpespasflnflfkvresgslspehgpvvvhcsagigrsgtfcladtclllmdkrkdp ssvdikkvllemrkfrmgliqtadqlrfsylaviegakfimgd