title: [Structure of the interphase chromatin in the ciliata Bursaria truncatella macronucleus. II. Loop organization of inactive chromatin clumps].
abstract: Electron microscopic study of chromatin organization in isolated macronuclei of a ciliate Bursaria truncatella showed macronuclear chromatin to be organized in compact clumps 120--180 nm in diameter linked with each other by one or several chromatin fibres. Macronucleus being dispersed in a solution of low ionic strength, radial loops basically of nucleosomal structure start appearing around chromatin clumps. Long-time dispersing of macronuclear chromatin brings complete decompactization of chromatin clumps into a set of nucleosome fibres. The way the fibres of interphase chromatin are packed in a chromatin clump is discussed.
mesh_terms: D002467:Cell Nucleus / Q000648:ultrastructure*; D002843:Chromatin / Q000648:ultrastructure*; D016798:Ciliophora / Q000166:cytology / Q000648:ultrastructure*; D007399:Interphase; D008854:Microscopy, Electron
chemical_list: D002843:Chromatin
vernacular_title: Struktura interfaznogo khromatina makronukleusa infuzorii Bursaria truncatella. II. Petel'naia organizatsiia glybok neaktivnogo khromatina.