Chains and heterogens:
PDB Chain Sequences:
>1qwyA (A:) aettntqqahtqmstqsqdvsygtyytidsngdyhhtpdgnwnqamfdnkeysytfvdaq ghthyfyncypknanangsgqtyvnpatagdnndytasqsqqhinqygyqsnvgpdasyy shsnnnqaynshdgngkvnypngtsnqnggsaskatasghakdaswltsrkqlqpygqyh gggahygvdyampenspvysltdgtvvqagwsnygggnqvtikeansnnyqwymhnnrlt vsagdkvkagdqiaysgstgnstaphvhfqrmsggignqyavdptsylqsr
>1qwyA (A:) vsygtyytidsngdyhhtpdgnwnqamfdnkeysytfvdaqghthyfyncypknanangs gqtyvnpatagdnndytasqsqqhinqygyqsnvgpdasyyssghakdaswltsrkqlqp ygqyhgggahygvdyampenspvysltdgtvvqagwsnygggnqvtikeansnnyqwymh nnrltvsagdkvkagdqiaysgstgnstaphvhfqrmsggignqyavdptsylq