Chains and heterogens:
PDB Chain Sequences:
>1fkxA (A:) tpafnkpkvelhvhldgaikpetilyfgkkrgialpadtveelrniigmdkplslpgfla kfdyympviagcreaikriayefvemkakegvvyvevrysphllanskvdpmpwnqtegd vtpddvvdlvnqglqegeqafgikvrsilccmrhqpswslevlelckkynqktvvamdla gdetiegsslfpghveayegavkngihrtvhagevgspevvreavdilktervghgyhti edealynrllkenmhfevcpwssyltgawdpktthavvrfkndkanyslntdaplifkst ldtdyqmtkkdmgfteeefkrlninaakssflpeeekkellerlyreyq