>2iu2A (A:) observed residues (from ATOM records)
tsqvrqnyhqdseaainrqinldlyasyvylsmsyyfdrddvalknfakyflhqsheere
haeklmklqnqrggriflqdiqkpdcddwesglnamecalhldknvnqsllelhklatdk
ndphlcdfiethylneqvkaikelgdhvtnlrkmgapesglaeylfdkhtlg