>3ku3B (B:) observed residues (from ATOM records)
glfgaiagfieggwqgmvdgwygyhhsndqgsgyaadkestqkafdgitnkvnsviekmn
tqfeavgkefsnlerrlenlnkkmedgfldvwtynaellvlmenertldfhdsnvknlyd
kvrmqlrdnvkelgngcfefyhkcddecmnsvkngtydypkyeeesklnrne