Chains and heterogens:
PDB Chain Sequences:
>1pm9A (A:) khslpdlpydygalephinaqimqlhhsknhaayvnnlnvteekyqealakgdvtaqial qpalkfnggghinhsifwtnlspngggepkgelleaikrdfgsfdkfkekltaasvgvqg sgwgwlgfnkerghlqiaacpnqdplqgttglipllgidvwehayflqyknvrpdylkai wnvinwenvterymackk
>1pm9A (A:) khslpdlpydygalephinaqimqlhhsknhaayvnnlnvteekyqealakgdvtaqial qpalkfnggghinhsifwtnlspngggepkgelleaikrdfgsfdkfkekltaasvgvqg sgwgwlgfnkerghlqiaacpnqdplqgttglipllgidvwehayflqyknvrpdylkai wnvinwenvterymac
>1pm9B (B:) khslpdlpydygalephinaqimqlhhsknhaayvnnlnvteekyqealakgdvtaqial qpalkfnggghinhsifwtnlspngggepkgelleaikrdfgsfdkfkekltaasvgvqg sgwgwlgfnkerghlqiaacpnqdplqgttglipllgidvwehayflqyknvrpdylkai wnvinwenvterymackk