Chains and heterogens:
PDB Chain Sequences:
>1a6tA (A:) qsvlsqspailsaspgekvimtcspsssvsymqwyqqkpgsspkpwiystsnlasgvpgr fsgggsgtsfsltisgveaedaatyycqqysshpltfgggtklelkradaaptvsifpps seqltsggasvvcflnnfypkdinvkwkidgserqngvlnswtdqdskdstysmsstltl tkdeyerhnsytceathktstspivksfnr
>1a6tB (B:) evqlqqsgpdlvkpgasvkisckasgysfstyymhwvkqshgkslewigrvdpdnggtsf nqkfkgkailtvdkssstaymelgsltsedsavyycarrddyyfdfwgqgtsltvssakt tppsvyplapvcggttgssvtlgclvkgyfpepvtltwnsgslssgvhtfpavlqsglyt lsssvtvtsstwpsqtitcnvahpasstkvdkkiepr
>1a6tC (C:) qsvlsqspailsaspgekvimtcspsssvsymqwyqqkpgsspkpwiystsnlasgvpgr fsgggsgtsfsltisgveaedaatyycqqysshpltfgggtklelkradaaptvsifpps seqltsggasvvcflnnfypkdinvkwkidgserqngvlnswtdqdskdstysmsstltl tkdeyerhnsytceathktstspivksfnr
>1a6tD (D:) evqlqqsgpdlvkpgasvkisckasgysfstyymhwvkqshgkslewigrvdpdnggtsf nqkfkgkailtvdkssstaymelgsltsedsavyycarrddyyfdfwgqgtsltvssakt tppsvyplapvcggttgssvtlgclvkgyfpepvtltwnsgslssgvhtfpavlqsglyt lsssvtvtsstwpsqtitcnvahpasstkvdkkiepr