Chains and heterogens:
PDB Chain Sequences:
>1f4gA (A:) mkqylelmqkvldegtqkndrtgtgtlsifghqmrfnlqdgfplvttkrchlrsiihell wflqgdtniaylhennvtiwdewadengdlgpvygkqwrawptpdgrhidqittvlnqlk ndpdsrriivsawnvgeldkmalapchaffqfyvadgklscqlyqrscdvflglpfnias yallvhmxaqqcdlevgdfvwtggdthlysnhmdqthlqlsreprplpkliikrkpesif dyrfedfeiegydphpgikapv
>1f4gA (A:) mkqylelmqkvldegtqkndrtgtgtlsifghqmrfnlqdgfplvttkrchlrsiihell wflqgdtniaylhennvtiwdewadengdlgpvygkqwrawptpdgrhidqittvlnqlk ndpdsrriivsawnvgeldkmalapchaffqfyvadgklscqlyqrscdvflglpfnias yallvhmaqqcdlevgdfvwtggdthlysnhmdqthlqlsreprplpkliikrkpesifd yrfedfeiegydphpgikapv
>1f4gB (B:) mkqylelmqkvldegtqkndrtgtgtlsifghqmrfnlqdgfplvttkrchlrsiihell wflqgdtniaylhennvtiwdewadengdlgpvygkqwrawptpdgrhidqittvlnqlk ndpdsrriivsawnvgeldkmalapchaffqfyvadgklscqlyqrscdvflglpfnias yallvhmxaqqcdlevgdfvwtggdthlysnhmdqthlqlsreprplpkliikrkpesif dyrfedfeiegydphpgikap
>1f4gB (B:) mkqylelmqkvldegtqkndrtgtgtlsifghqmrfnlqdgfplvttkrchlrsiihell wflqgdtniaylhennvtiwdewadengdlgpvygkqwrawptpdgrhidqittvlnqlk ndpdsrriivsawnvgeldkmalapchaffqfyvadgklscqlyqrscdvflglpfnias yallvhmaqqcdlevgdfvwtggdthlysnhmdqthlqlsreprplpkliikrkpesifd yrfedfeiegydphpgikap