>5chfB (B:) observed residues (from ATOM records)
awdlkvkmlggndflvsvtnsmtvselkkqiaqkigvpafqqrlahqtavlqdgltlssl
glgpsstvmlvvqnsseplsilvrnerghsniyevfltqtvdtlkkkvsqreqvhedqfw
lsfegrpmedkellgeyglkpqctvikhlr