>6l69B (B:) observed residues (from ATOM records)
trialdpfvsdleaesaalraagplaavelpggvpvwavthhaeakklltdprlvkdinv
wgawqrgeiapdwpliglanpgrsmltvdgadhrrmrtlvaqaltprrveqmreritklt
eelldrltgevvdlkadfayplpmyvvadlmgidearlprlgelfekffstqtppaevia
tltelagimaetvaakraapgddltsalilasedgdhltdaeivstlqlmvaaghettis
livnavvnlsthpeqralvlsgeadwssvveetlrystptshvlirfatedvpvgdkvlp
agdalivsygalgrdeaahgptagefditrstenrhisfghgphvcpgaalsrleagval
palyarfpkldlavpaaelrnkpvvtqndlfelpvrlg