>3kf4B (B:) SEQRES residues
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avmkeikhpnlvqllgvctreppfyiitefmtygnlldylrecnrqevsavvllymatqi
ssameylekknfihrdlaarnclvgenhlvkvadfglsrlmtgdtytahagakfpikwta
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vyelmracwqwnpsdrpsfaeihqafetmfqessisdevekelgkrgt