Chains and heterogens:
PDB Chain Sequences:
>1bzjA (A:) emekefeqidksgswaaiyqdirheasdfpcrvaklpknknrnryrdvspfdhsriklhq edndyinaslikmeeaqrsyiltqgplpntcghfwemvweqksrgvvmlnrvmekgslkc aqywpqkeekemifedtnlkltlisediksyytvrqlelenlttqetreilhfhyttwpd fgvpespasflnflfkvresgslspehgpvvvhcsagigrsgtfcladtclllmdkrkdp ssvdikkvllemrkfrmgliqtadqlrfsylaviegakfimgdssvqdqwkelshed