Chains and heterogens:
PDB Chain Sequences:
>1ydb_ (-) wgygkhngpehwhkdfpiakgerqspvdidthtakydpslkplsvsydqatslrilnngh afnvefddsqdkavlkggpldgtyrliqfhfhwgsldgqgsehtvdkkkyaaelhlvhwn tkygdfgkavqqpdglavlgiflkvgsakpglqkvvdvldsiktkgksadftnfdprgll pesldywtypgsfttppllecvtwivlkepisvsseqvlkfrklnfngegepeelmvdnw rpaqplknrqikasf