title: Analysis of nucleosomal deoxyribonucleic acid in a higher plant.
abstract: Comparisons of nuclease digestions of chromatin in nuclei from rye embryos and rat liver show that their nucleosomal DNA is similar, i.e. DNA subunits consist of 200 base-pair repeats with 140 base-pair cores of identical substructure. The identical nucleosome structure is present in nuclei from cells of rye embryos that have been non-viable (i.e. dead) for more than 7 years. These findings indicate a high degree of stability of the DNA-histone complex and are consistent with conservation of the nucleosomal structure of chromatin during evolution.
mesh_terms: D001483:Base Sequence; D002470:Cell Survival; D002843:Chromatin / Q000032:analysis; D004247:DNA / Q000032:analysis*; D002523:Edible Grain / Q000032:analysis*; D004587:Electrophoresis, Agar Gel; D012434:Secale / Q000032:analysis*; D012639:Seeds
chemical_list: D002843:Chromatin; D004247:DNA