>6z6uO (O:) observed residues (from ATOM records)
stsqvrqnyhqdseaainrqinlelyasyvylsmsyyfdrddvalknfakyflhqsheer
ehaeklmklqnqrggriflqdiqkpdcddwesglnamecalhleknvnqsllelhklatd
kndphlcdfiethylneqvkaikelgdhvtnlrkmgapesglaeylfdkhtlg