>2a2nA (A:) observed residues (from ATOM records)
qaegpkrvsdsaiihtsmgdihtklfpvecpktvenfcvhsrngyynghtfhriikgfmi
qtgdptgtgmggesiwggefedefhstlrhdrpytlsmanagsntngsqffitvvptpwl
dnkhtvfgrvtkgmevvqrisnvkvnpktdkpyedvsiinitvk