>3bk9C (C:) observed residues (from ATOM records)
lrdlepgihtdlegrltyggylrldqllsaqqplsepahhdemlfiiqaqtselwlklla
helraaivhlqrdevwqcrkvlarskqvlrqlteqwsvletltpseymgfrdvlgpssgf
qslqyryiefllgnknpqmlqvfaydpagqarlrevleapslyeeflrylarfghaipqq
dwtaahvaddtlrpvferiyentdrywreyslcedlvdvetqfqlwrfrhmrtvmrvigf
krgtggssgvgflqqalaltffpelfdvrtsv