title: [Three levels of structural organization of the eukaryotic chromosomes].
abstract: Three levels of structural organization of eukaryotic DNA in the cell nucleus are considered in this paper: (i) the chain of nucleosomes; (ii) the solenoidal or superbead (nucleomere) model of compactization of the nucleosomal fiber; (iii) the mode of suprasolenoidal DNP-packing--loops or domains. Recent results bearing on the relation of these three levels to functional activity of chromatin are also discussed.
mesh_terms: D000818:Animals; D002467:Cell Nucleus / Q000648:ultrastructure*; D002875:Chromosomes / Q000648:ultrastructure*; D004247:DNA / Q000032:analysis; D046911:Macromolecular Substances; D008958:Models, Molecular; D008970:Molecular Weight; D009690:Nucleic Acid Conformation; D009698:Nucleoproteins / Q000032:analysis; D011487:Protein Conformation
chemical_list: D046911:Macromolecular Substances; D009698:Nucleoproteins; D004247:DNA
vernacular_title: Tri urovnia strukturnoĭ organizatsii khromosom eukariot.