>1d3yB (B:) observed residues (from ATOM records)
nqakifaqttkmlefakqlletddfstlreayyvsknwgearfddqqasnnviedleaal
gvlrehlgfipeedgssvvgplkiieetpegelvvdctklgtgaynipndvtklnletda
dfilaietsgmfarlnaerfwdkhncilvslkgvparatrrfikrlheehdlpvlvftdg
dpygylniyrtlkvgklsipaarligvtpqdiidydlpthplkeqdikrikdglknddfv
rsfpewqkalkqmldmgvraeqqslakyglkyvvntylpekikdestwlp