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