>1w63X (X:) observed residues (from ATOM records)
mmrfmllfsrqgklrlqkwylatsdkerkkmvrelmqvvlarkpkmcsflewrdlkvvyk
ryaslyfccaiegqdnelitlelihryvelldkyfgsvceldiifnfekayfildeflmg
gdvqdtskksvlkaieqadllqeedespr