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