Chains and heterogens:
PDB Chain Sequences:
>1g3zA (A:) hhwgygkhngpehwhkdfpiakgerqspvdidthtakydpslkplsvsydqatslrilnn ghafnvefddsqdkavlkggpldgtyrliqfhfhwgsldgqgsehtvdkkkyaaelhlvh wntkygdvgkavqqpdglavlgiflkvgsakpglqkvvdvldsiktkgksadftnfdprg llpesldywtypgslttppllecvtwivlkepisvsseqvlkfrklnfngegepeelmvd nwrpaqplknrqikasfk