Chains and heterogens:
PDB Chain Sequences:
>1m44A (A:) mhtqvhtarlvhtadldsetrqdirqmvtgafagdftetdwehtlggmhaliwhhgaiia haaviqrrliyrgnalrcgyvegvavradwrgqrlvsalldaveqvmrgayqlgalsssa rarrlyasrgwlpwhgptsvlaptgpvrtpdddgtvfvlpidisldtsaelmcdwragdv w
>1m44A (A:) vhtarlvhtadldsetrqdirqmvtgafagdftetdwehtlggmhaliwhhgaiiahaav iqrrliyrgnalrcgyvegvavradwrgqrlvsalldaveqvmrgayqlgalsssararr lyasrgwlpwhgptsvlaptgpvrtpdddgtvfvlpidisldtsaelmcdwragdvw
>1m44B (B:) mhtqvhtarlvhtadldsetrqdirqmvtgafagdftetdwehtlggmhaliwhhgaiia haaviqrrliyrgnalrcgyvegvavradwrgqrlvsalldaveqvmrgayqlgalsssa rarrlyasrgwlpwhgptsvlaptgpvrtpdddgtvfvlpidisldtsaelmcdwragdv w
>1m44B (B:) htqvhtarlvhtadldsetrqdirqmvtgafagdftetdwehtlggmhaliwhhgaiiah aaviqrrliyrgnalrcgyvegvavradwrgqrlvsalldaveqvmrgayqlgalsssar arrlyasrgwlpwhgptsvlaptgpvrtpdddgtvfvlpidisldtsaelmcdwragdvw