>3d1aC (C:) observed residues (from ATOM records)
vlsaadksnvkaawgkvggnagaygaealermflsfpttktyfphfdlshgsaqvkghge
kvaaaltkavghlddlpgtlsdlsdlhahklrvdpvnfkllshsllvtlachlpndftpa
vhasldkflanvstvltskyr