Chains and heterogens:
PDB Chain Sequences:
>1fl3A (A:) aallesggglvkpggslklsctasgitfsryimswvrqipekrlewvasissggityypd svagrftisrdnvrnilylqmsslrsedtalyycargqgrpywgqgtsvtvsaakttpps vypaapgcgdttgssvtlgclvkgyfpepvtvtwnsggssvhtfpallqsglytmsssvt vpsstwpstvtcsvahpassttvdkkle
>1fl3B (B:) aaltqspvsnpvtlgtsasiscrstksllhsngitylywylqkpgqspqlliyqmsnlas gvpnrfsssgsgtdftlrintveaedvgvyycaqnlelpptfgagtklelkradaaptvs ifppsseqltsggasvvcflnnfypkdinvkwkidgserqngvlnswtdqdskdstysms stltltkdeyerhngytceathktstspivksfn
>1fl3H (H:) aallesggglvkpggslklsctasgitfsryimswvrqipekrlewvasissggityypd svagrftisrdnvrnilylqmsslrsedtalyycargqgrpywgqgtsvtvsaakttpps vypaapgcgdttgssvtlgclvkgyfpepvtvtwnsggssvhtfpallqsglytmsssvt vpsstwpstvtcsvahpassttvdkkle
>1fl3L (L:) aaltqspvsnpvtlgtsasiscrstksllhsngitylywylqkpgqspqlliyqmsnlas gvpnrfsssgsgtdftlrintveaedvgvyycaqnlelpptfgagtklelkradaaptvs ifppsseqltsggasvvcflnnfypkdinvkwkidgserqngvlnswtdqdskdstysms stltltkdeyerhngytceathktstspivksfn