Chains and heterogens:
PDB Chain Sequences:
>4iswA (A:) mevmnkeniiadapsdvvktvqqqvhlnqdeykylkqveqilregtrrddrtgtgtisif gmqskyclrngtipllttkrvywkgvleellwfisgstdgkllmeknvkiwekngdrafl dnlgftsreegdlgpvygfqwrhfgakyvdchtdysgqgvdqlaevirqikeqpdsrrii msawnpsdlgqmvlppchtmcqfyvdngelscqlyqrsgdmglgvpfnlasygllthmia kvcglkpgtlvhtlgdahvysnhvdalkiqldrepyafpkirftrdvasiddftsdmial ddykchpkipmdmav
>4iswA (A:) qqvhlnqdeykylkqveqilregtrrddrtgtgtisifgmqskyclrngtipllttkrvy wkgvleellwfisgstdgkllmeknvkiwekngdrafldnlgftsreegdlgpvygfqwr hfgakyvdchtdysgqgvdqlaevirqikeqpdsrriimsawnpsdlgqmvlppchtmcq fyvdngelscqlyqrsgdmglgvpfnlasygllthmiakvcglkpgtlvhtlgdahvysn hvdalkiqldrepyafpkirftrdvasiddftsdmialddykchpkipmd
>4iswB (B:) mevmnkeniiadapsdvvktvqqqvhlnqdeykylkqveqilregtrrddrtgtgtisif gmqskyclrngtipllttkrvywkgvleellwfisgstdgkllmeknvkiwekngdrafl dnlgftsreegdlgpvygfqwrhfgakyvdchtdysgqgvdqlaevirqikeqpdsrrii msawnpsdlgqmvlppchtmcqfyvdngelscqlyqrsgdmglgvpfnlasygllthmia kvcglkpgtlvhtlgdahvysnhvdalkiqldrepyafpkirftrdvasiddftsdmial ddykchpkipmdmav
>4iswB (B:) qqvhlnqdeykylkqveqilregtrrddrtgtgtisifgmqskyclrngtipllttkrvy wkgvleellwfisgstdgkllmeknvkiwekngdrafldnlgftsreegdlgpvygfqwr hfgakyvdchtdysgqgvdqlaevirqikeqpdsrriimsawnpsdlgqmvlppchtmcq fyvdngelscqlyqrsgdmglgvpfnlasygllthmiakvcglkpgtlvhtlgdahvysn hvdalkiqldrepyafpkirftrdvasiddftsdmialddykchpkipmd