>5x31A (A:) observed residues (from ATOM records)
asenievhmlnkgaegamvfepayikanpgdtvtfipvdkghnvesikdmipegaekfks
kinenyvltvtqpgaylvkctphyamgmialiavgdspanldqivsakkpkivqerlekv
iasak