Automated Electron Microscope Tomography of Frozen–Hydrated Chromatin: The Irregular Three-Dimensional Zigzag Architecture Persists in Compact, Isolated …

RA Horowitz, AJ Koster, J Walz… - Journal of structural biology, 1997 - Elsevier
The potential of electron microscope tomography as a tool for obtaining three-dimensional
(3D) information about large macromolecular assemblies is greatly extended by automation …

Cryo-electron microscopy of the chromatin fiber

R Boopathi, S Dimitrov, A Hamiche, C Petosa… - Current Opinion in …, 2020 - Elsevier
Highlights•Cryo-electro microscopy reveals the native conformation of chromatin fiber both
in vitro and in situ.•Presence of linker histone and ionic conditions determines the level of …

Higher-Order Structure Of Chromatin From Resting Cells: Ii. High-Resolution Computer Analysis Of Native Chromatin Fibres And Freeze-Etching Of Nuclei From Rat …

C Nicolini, B Cavazza, V Trefiletti, F Pioli… - Journal of Cell …, 1983 - journals.biologists.com
Non-destructive electron microscopy of native chromatin from rat liver nuclei reveals that the
30 nm fibre is formed of four 11 nm nucleofilaments, arranged in a coiled-coil (or rope-like) …

Chromatin fibers observed in situ in frozen hydrated sections. Native fiber diameter is not correlated with nucleosome repeat length.

CL Woodcock - The Journal of cell biology, 1994 - rupress.org
Chromatin fibers have been observed and measured in frozen hydrated sections of three
types of cell (chicken erythrocytes and sperm of Patiria miniata and Thyone briareus) …

Analysis of chromatin fibers in Hela cells with electron tomography

X Li, H Feng, J Zhang, L Sun, P Zhu - Biophysics reports, 2015 - Springer
The presence and folding pattern of chromatin in eukaryotic cells remain elusive and
controversial. In this study, we prepared ultra-thin sections of Hela cells with three different …

The three-dimensional architecture of chromatin in situ: electron tomography reveals fibers composed of a continuously variable zig-zag nucleosomal ribbon.

RA Horowitz, DA Agard, JW Sedat… - The Journal of cell …, 1994 - rupress.org
The three dimensional (3D) structure of chromatin fibers in sections of nuclei has been
determined using electron tomography. Low temperature embedding and nucleic acid …

Chromatin substructure: An electron microscopic study of thin‐sectioned chromatin subjected to sequential protein extraction and water swelling procedures

IL Cameron, WA Pavlat, JR Jeter Jr - The Anatomical Record, 1979 - Wiley Online Library
Electron microscopic observations and measurements were made on thin‐sectioned
chromatin fibers and fibrils obtained from nuclei of mature chicken erythrocytes. The nuclei …

Chromatin structure outside and inside the nucleus

R Ghirlando, G Felsenfeld - Biopolymers, 2013 - Wiley Online Library
The structure of the 30‐nm chromatin fiber has provided, over the years, an important
reference in chromatin studies. Originally derived from electron microscopic studies of …

Ultrastructural preservation of nuclei and chromatin: improvement with low‐temperature methods

RA Horowitz, PJ Giannasca… - Journal of …, 1990 - Wiley Online Library
The ultrastructure of chromatin has been examined in nuclei prepared by a variety of low‐
temperature methods. Embedding glutaraldehyde (GA)‐fixed nuclei in Lowicryl K4M or …

Chromatin structure: does the 30-nm fibre exist in vivo?

K Maeshima, S Hihara, M Eltsov - Current opinion in cell biology, 2010 - Elsevier
A long strand of DNA is wrapped around the core histone and forms a nucleosome.
Although the nucleosome has long been assumed to be folded into 30-nm chromatin fibres …