Chains and heterogens:
PDB Chain Sequences:
>2hnq_ (-) kefeqidksgswaaiyqdirheasdfpcrvaklpknknrnryrdvspfdhsriklhqedn dyinaslikmeeaqrsyiltqgplpntcghfwemvweqksrgvvmlnrvmekgslkcaqy wpqkeekemifedtnlkltlisediksyytvrqlelenlttqetreilhfhyttwpdfgv pespasflnflfkvresgslspehgpvvvhcsagigrsgtfcladtclllmdkrkdpssv dikkvllemrkfrmgliqtadqlrfsylaviegakfim