>4ykhA (A:) observed residues (from ATOM records)
tsqvrqnyhqdseaainrqinlelyasyvylsmsyyfdrddvalknfakyflhqsheere
haeklmklqnqrggriflqdikkpdcddwesglnamecalhleknvnqsllelhklatdk
ndphlcdfiethylneqvkaikelgdhvtnlrkmgapesglaeylfdkhtlg