Chains and heterogens:
PDB Chain Sequences:
>1aiqA (A:) mkqylelmqkvldegtqkndrtgtgtlsifghqmrfnlqdgfplvttkrchlrsiihell wflqgdtniaylhennvtiwdewadengdlgpvygkqwrawptpdgrhidqittvlnqlk ndpdseriivsawnvgeldkmalapchaffqfyvadgklscqlyqrscdvflglpfnias yallvhmmaqqcdlevgdfvwtggdthlysnhmdqthlqlsreprplpkliikrkpesif dyrfedfeiegydphpgikapvai
>1aiqB (B:) mkqylelmqkvldegtqkndrtgtgtlsifghqmrfnlqdgfplvttkrchlrsiihell wflqgdtniaylhennvtiwdewadengdlgpvygkqwrawptpdgrhidqittvlnqlk ndpdseriivsawnvgeldkmalapchaffqfyvadgklscqlyqrscdvflglpfnias yallvhmmaqqcdlevgdfvwtggdthlysnhmdqthlqlsreprplpkliikrkpesif dyrfedfeiegydphpgikapvai