>3j39M (M:) observed residues (from ATOM records)
mpferfvqtgriakasagplkgrlvaivdvidqnrvlvdgpltgvprqeyrlnnlhltky
rikfpytaptrivrkawtesdlkaqwkvspwsvkaqnickrsslndfdrfklryakrqrn
klltiafntlkkrtkadgtprvlkkdrrerlraekakgg