Chains and heterogens:
PDB Chain Sequences:
>1np6A (A:) agktmipllafaawsgtgkttllkklipalcargirpglikhthhdmdvdkpgkdsyelr kagaaqtivasqqrwalmtetpdeeeldlqflasrmdtskldlilvegfkheeiakivlf rdgaghrpeelvidrhviavasdvplnldvalldindvegladfvvewmqkqng
>1np6A (A:) mipllafaawsgtgkttllkklipalcargirpglikhthhelrkagaaqtivasqqrwa lmtetpdeeeldlqflasrmdtskldlilvegfkheeiakivlfrdgaghrpeelvidrh viavasdvplnldvalldindvegladfvvewmqkqng
>1np6B (B:) agktmipllafaawsgtgkttllkklipalcargirpglikhthhdmdvdkpgkdsyelr kagaaqtivasqqrwalmtetpdeeeldlqflasrmdtskldlilvegfkheeiakivlf rdgaghrpeelvidrhviavasdvplnldvalldindvegladfvvewmqkqng
>1np6B (B:) mipllafaawsgtgkttllkklipalcargirpglikhthhdmdvdkpgkdsyelrkaga aqtivasqqrwalmtetpdeeeldlqflasrmdtskldlilvegfkheeiakivlfrdga ghrpeelvidrhviavasdvplnldvalldindvegladfvvewmqkqn