Chains and heterogens:
PDB Chain Sequences:
>1nwlA (A:) memekefeqidksgswaaiyqdirheasdfpsrvaklpknknrnrycdvspfdhsriklh qedndyinaslikmeeaqrsyiltqgplpntvghfwemvweqksrgvvmlnrvmekgslk caqywpqkeekemifedtnlkltlisediksyytvrqlelenlttqetreilhfhyttwp dfgvpespasflnflfkvresgslspehgpvvvhcsagigrsgtfcladtclllmdkrkd pssvdikkvllemrkfrmgliqtadqlrfsylaviegakfimgdssvqdqwkelshed
>1nwlA (A:) memekefeqidksgswaaiyqdirheasdfpsrvaklpknknrnrycdvspfdhsriklh qedndyinaslikmeeaqrsyiltqgplpntvghfwemvweqksrgvvmlnrvmekgslk caqywpqkeekemifedtnlkltlisediksyytvrqlelenlttqetreilhfhyttwp dfgvpespasflnflfkvresgslspehgpvvvhcsagigrsgtfcladtclllmdkrkd pssvdikkvllemrkfrmgliqtadqlrfsylaviegakfimg