Chains and heterogens:
PDB Chain Sequences:
>1bv3A (A:) hwgygkhngpehwhkdfpiakgerqspvdidthtakydpslkplsvsydqatslrilnng hafnvefddsqdkavlkggpldgtyrliqfhfhwgsldgqgsehtvdkkkyaaelhlvhw ntkygdfgkavqqpdglavlgiflkvgsakpglqkvvdvldsiktkgksadftnfdprgl lpesldywtypgslttppllecvtwivlkepisvsseqvlkfrklnfngegepeelmvdn wrpaqplknrqikasfk