>6s61O (O:) observed residues (from ATOM records)
psqvrqnyhqdaeaainrqinlelyasyvylsmscyfdrddvalknfakyflhqsheere
haeklmklqnqrggriflqdikkpdrddwesglnamecalhleksvnqsllelhklatdk
ndphlcdfietyylseqvksikelgdhvtnlrkmgapeagmaeylfdkhtlg