>3n3aA (A:) observed residues (from ATOM records)
isainwnkisddkdlevwnrltsnfwlpekvplsndipawqtltvveqqltmrvftgltl
ldtlqnvigapslmpdaltpheeavlsnisfmeavharsyssifstlcqtkdvdaayaws
eenaplqrkaqiiqqhyrgddplkkkiasvflesflfysgfwlpmyfssrgkltntadli
rliirdeavhgyyigykyqknmekislgqreelksfafdlllelydnelqytdelyaetp
waddvkaflcynankalmnlgyeplfpaemaevnpailaals