Chains and heterogens:
PDB Chain Sequences:
>1cvf_ (-) wgygkhngpehwhkdfpiakgerqspvdidthtakydpslkplsvsydqatslrilnngh afnvefddsqdkavlkggpldgtyrliqfafhwgsldgqgsehtvdkkkyaaelhlvhwn tkygdfgkavqqpdglavlgiflkvgsakpglqkvvdvldsiktkgksadftnfdprgll pesldywtypgslttppllecvtwivlkepisvsseqvlkfrklnfngegepeelmvdnw rpaqplknrqikasf