>3i97A (A:) observed residues (from ATOM records)
kcmealgmesgeihsdqitassqystnwsaersrlnypengwtpgedsyrewiqvdlgll
rfvtavgtqgaisketkkkyyvktykidvssngedwitikegnkpvlfqgntnptdvvva
vfpkplitrfvrikpatwetgismrfevygckit