>1w63S (S:) observed residues (from ATOM records)
mmrfmllfsrqgklrlqkwylatsdkerkkmvrelmqvvlarkpkmcsflewrdlkvvyk
ryaslyfccaiegqdnelitlelihryvelldkyfgsvceldiifnfekayfildeflmg
gdvqdtskksvlkaieqadllqeedespr