Chains and heterogens:
PDB Chain Sequences:
>1c83A (A:) memekefeqidksgswaaiyqdirheasdfpcrvaklpknknrnryrdvspfdhsriklh qedndyinaslikmeeaqrsyiltqgplpntcghfwemvweqksrgvvmlnrvmekgslk caqywpqkeekemifedtnlkltlisediktyytvrqlelenlttqetreilhfhyttwp dfgvpespasflnflfkvresgslspehgpvvvhcsagigrsgtfcladtclllmdkrkd pssvdikkvlldmrkfrmgliqtadqlrfsylaviegakfimgdssvqdqwkelshed
>1c83A (A:) emekefeqidksgswaaiyqdirheasdfpcrvaklpknknrnryrdvspfdhsriklhq edndyinaslikmeeaqrsyiltqgplpntcghfwemvweqksrgvvmlnrvmekgslkc aqywpqkeekemifedtnlkltlisediktyytvrqlelenlttqetreilhfhyttwpd fgvpespasflnflfkvresgslspehgpvvvhcsagigrsgtfcladtclllmdkrkdp ssvdikkvlldmrkfrmgliqtadqlrfsylaviegakfimgdssvqdqwkelshed