Chains and heterogens:
PDB Chain Sequences:
>1fl6A (A:) elvmtqtplslpvslgdqasiscrssqsivhsngntylewylqkpgqspklliykvsnrf sgvpdrfsgsgsgtdftlkisrveaedlgvyycfqgshvprtfgggtkleikrtvaapsv fifppsdeqlksgtasvvcllnnfypreakvqwkvdnalqsgnsqesvteqdskdstysl sstltlskadyekhkvyacevthqglsspvtksfnrg
>1fl6B (B:) qvqlvesggglvqpggslrlscatsgftftdyymswvrqppgkalewlgfirnkangytt eysasvkgrftisrdnsqsilylqmntlraedsatyycardgsyamdywgqgtsvtvssa stkgpsvfplapsskstsggtaalgclvkdyfpepvtvswnsgaltsgvhtfpavlqssg lyslssvvtvpssslgtqtyicnvnhkpsntkvdkkvep
>1fl6H (H:) qvqlvesggglvqpggslrlscatsgftftdyymswvrqppgkalewlgfirnkangytt eysasvkgrftisrdnsqsilylqmntlraedsatyycardgsyamdywgqgtsvtvssa stkgpsvfplapsskstsggtaalgclvkdyfpepvtvswnsgaltsgvhtfpavlqssg lyslssvvtvpssslgtqtyicnvnhkpsntkvdkkvep
>1fl6L (L:) elvmtqtplslpvslgdqasiscrssqsivhsngntylewylqkpgqspklliykvsnrf sgvpdrfsgsgsgtdftlkisrveaedlgvyycfqgshvprtfgggtkleikrtvaapsv fifppsdeqlksgtasvvcllnnfypreakvqwkvdnalqsgnsqesvteqdskdstysl sstltlskadyekhkvyacevthqglsspvtksfnrg