Chains and heterogens:
PDB Chain Sequences:
>1k7lA (A:) dlkslakriyeaylknfnmnkvkarvilsgkasnnppfvihdmetlcmaektlvaklvan giqnkeaevrifhccqctsvetvteltefakaipgfanldlndqvtllkygvyeaifaml ssvmnkdgmlvaygngfitreflkslrkpfcdimepkfdfamkfnalelddsdislfvaa iiccgdrpgllnvghiekmqegivhvlrlhlqsnhpddiflfpkllqkmadlrqlvteha qlvqiikktesdaalhpllqeiyrdmy
>1k7lC (C:) dlkslakriyeaylknfnmnkvkarvilsgkasnnppfvihdmetlcmaektlvaklvan giqnkeaevrifhccqctsvetvteltefakaipgfanldlndqvtllkygvyeaifaml ssvmnkdgmlvaygngfitreflkslrkpfcdimepkfdfamkfnalelddsdislfvaa iiccgdrpgllnvghiekmqegivhvlrlhlqsnhpddiflfpkllqkmadlrqlvteha qlvqiikktesdaalhpllqeiyrdmy
>1k7lE (E:) dlkslakriyeaylknfnmnkvkarvilsgkasnnppfvihdmetlcmaektlvaklvan giqnkeaevrifhccqctsvetvteltefakaipgfanldlndqvtllkygvyeaifaml ssvmnkdgmlvaygngfitreflkslrkpfcdimepkfdfamkfnalelddsdislfvaa iiccgdrpgllnvghiekmqegivhvlrlhlqsnhpddiflfpkllqkmadlrqlvteha qlvqiikktesdaalhpllqeiyrdmy
>1k7lG (G:) dlkslakriyeaylknfnmnkvkarvilsgkasnnppfvihdmetlcmaektlvaklvan giqnkeaevrifhccqctsvetvteltefakaipgfanldlndqvtllkygvyeaifaml ssvmnkdgmlvaygngfitreflkslrkpfcdimepkfdfamkfnalelddsdislfvaa iiccgdrpgllnvghiekmqegivhvlrlhlqsnhpddiflfpkllqkmadlrqlvteha qlvqiikktesdaalhpllqeiyrdmy