>6s61X (X:) observed residues (from ATOM records)
psqvrqnyhqdaeaainrqinlelyasyvylsmscyfdrddvalknfakyflhqsheere
haeklmklqnqrggriflqdikkpdrddwesglnamecalhleksvnqsllelhklatdk
ndphlcdfietyylseqvksikelgdhvtnlrkmgapeagmaeylfdkhtlg