>2x17Y (Y:) observed residues (from ATOM records)
mlsermlkalndqlnrelysaylyfamaayfedlglegfanwmkaqaeeeighalrfyny
iydrngrveldeipkppkewesplkafeaayehekfisksiyelaalaeeekdystrafl
ewfineqveeeasvkkildklkfakdspqilfmldkelsarapklpgllm