>1du3K (K:) observed residues (from ATOM records) qrvaahitgtrgrsntalgrkinswessrsghsflsnlhlrngelvihekgfyyiysqty frfqeeikentkndkqmvqyiykytsypdpillmksarnscwskdaeyglysiyqggife lkendrifvsvtnehlidmdheasffgaflvg