Chains and heterogens:
PDB Chain Sequences:
>1fi1A (A:) esawgpaatiaarqsatgtktdtpiqkvpqsisvvtaeemalhqpksvkealsytpgvsv gtrgasntydhliirgfaaegqsqnnylnglklqgnfyndavidpymleraeimrgpvsv lygksspggllnmvskrptteplkevqfkagtdslfqtgfdfsdsldddgvysyrltgla rsanaqqkgseeqryaiapaftwrpddktnftflsyfqnepetgyygwlpkegtveplpn gkrlptdfnegaknntysrnekmvgysfdhefndtftvrqnlrfaenktsqnsvygygvc sdpanayskqcaalapadkghylarkyvvddeklqnfsvdtqlqskfatgdidhtlltgv dfmrmrndinawfgyddsvpllnlynpsshhhhhhgssvntdfdfnakdpansgpyriln kqkqtgvyvqdqaqwdkvlvtlggrydwadqeslnrvagttdkrddkqftwrggvnylfd ngvtpyfsysesfepssqvgkdgnifapskgkqyevgvkyvpedrpivvtgavynltktn nlmadpegsffsveggeirargveieakaalsasvnvvgsytytdaeyttdttykgntpa qvpkhmaslwadytffdgplsgltlgtggrytgssygdpansfkvgsytvvdalvrydla rvgmagsnvalhvnnlfdreyvascfntygcfwgaerqvvatatfrf