Chains and heterogens:
PDB Chain Sequences:
>1ydd_ (-) hwgygkhngpehwhkdfpiakgerqspvdidthtakydpslkplsvsydqatslrilnng hafnvefddsqdkavlkggpldgtyrliqfhfhwgsldgqgsehtvdkkkyaaelhlvhw ntkygdfgkavqqpdglavlgiflkvgsakpglqkvvdvldsiktkgksadftnfdprgl lpesldywtypgsrttppllecvtwivlkepisvsseqvlkfrklnfngegepeelmvdn wrpaqplknrqikasf