>2z6mD (D:) observed residues (from ATOM records)
tsqvrqnydqdseaainrqinlelyasyvylsmsyyfdrddvalknfakyflhqsheerc
haeklmklqnqrggriflqdikkpdrddwesglnameaalqleknvnqsllelhklatdk
ndphlcdfiethylncqvcaikclgdhvtnlrkmgapesglaeylfdkhtlg