>5up9B (B:) observed residues (from ATOM records)
stsqvrqnyhqdseaainrqinlelyasyvylsmsyyfdrddvalknfakyflhqsheer
ehaeklmklqnqrggriflqdiqkpdeddwesglnameaalhleknvnqsllelhklahd
kndphladfiethylneqvkaikelgdhvtnlrkmgapesglaeylfdkhtlgd