Chains and heterogens:
PDB Chain Sequences:
>1u5kA (A:) mrsrtanrsgivirrrvtpagdiivtlltpqgklkaiarggvkgplssslnlfhhvgvqv yqgphndlasvkqavlegalptlaeperyafahlmaefadalfqegefseqafdlfaasl rgvahqpdpewvalvmsykllglagvipqtarcarcgapdpehpdplggqllcskcaalp pyppavldflrhavrrtvrasfeqpvpsadrpalwralekfvtvqvggvhswrqlvpsgv pvls
>1u5kA (A:) rsrtanrsgivirrrvtpagdiivtlltpqgklkaiarggvkgplssslnlfhhvgvqvy qgphdlasvkqavlegalptlaeperyafahlmaefadalfqegefseqafdlfaaslrg vahqpdpewvalvmsykllglagvipqtarcarcgapdpehpdplggqllcskcaalppy ppavldflrhavrrtvrasfeqpvpsadrpalwralekfvtvqvggvhswrqlvpsgvpv ls
>1u5kB (B:) mrsrtanrsgivirrrvtpagdiivtlltpqgklkaiarggvkgplssslnlfhhvgvqv yqgphndlasvkqavlegalptlaeperyafahlmaefadalfqegefseqafdlfaasl rgvahqpdpewvalvmsykllglagvipqtarcarcgapdpehpdplggqllcskcaalp pyppavldflrhavrrtvrasfeqpvpsadrpalwralekfvtvqvggvhswrqlvpsgv pvls
>1u5kB (B:) mrsrtanrsgivirrrvtpagdiivtlltpqgklkaiargplssslnlfhhvgvqvyqgp hndlasvkqavlegalptlaeperyafahlmaefadalfqgefseqafdlfaaslrgvah qpdpewvalvmsykllglagvipqtarcarcgapdpehpdplggqllcskcaalppyppa vldflrhavrrtvrasfeqpvpsadrpalwralekfvtvqvggvhswrqlvp