Chains and heterogens:
PDB Chain Sequences:
>1fbl_ (-) fvltpgnprwenthltyrienytpdlsredvdraiekafqlwsnvspltftkvsegqadi misfvrgdhrdnspfdgpggnlahafqpgpgiggdahfdederwtknfrdynlyrvaahe lghslglshstdigalmypnyiytgdvqlsqddidgiqaiygpsenpvqpsgpqtpqvcd skltfdaittlrgelmffkdrfymrtnsfypevelnfisvfwpqvpnglqaayeiadrde vrffkgnkywavrgqdvlygypkdihrsfgfpstvknidaavfeedtgktyffvahecwr ydeykqsmdtgypkmiaeefpgignkvdavfqkdgflyffhgtrqyqfdfktkriltlqk answfnc