Chains and heterogens:
PDB Chain Sequences:
>3tms_ (-) mkqylelmqkvldegtqkndrtgtgtlsifghqmrfnlqdgfplvttkrchlrsiihell wflqgdtniaylhennvtiwdewadengdlgpvygkqwrawptpdgrhidqittvlnqlk ndpdsrriivsawnvgeldkmalapchaffqfyvadgklscqlyqrscdvflglpfnias yallvhmmaqqcdlevgdfvwtggdthlysnhmdqthlqlsreprplpkliikrkpesif dyrfedfeiegydphpgikapvai