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Related Concept Videos

Inheritance of Chromatin Structures03:17

Inheritance of Chromatin Structures

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Epigenetics is the study of inherited changes in a cell's phenotype without changing the DNA sequences. It provides a form of memory for the differential gene expression pattern to maintain cell lineage, position-effect variegation, dosage compensation, and maintenance of chromatin structures such as telomeres and centromeres. For example, the structure and location of the centromere on chromosomes are epigenetically inherited. Its functionality is not dictated or ensured by the underlying...
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The extent of chromatin compaction can be studied by staining chromatin using specific DNA binding dyes. Under the microscope, the dense-compacted regions that take up more dye are called heterochromatin. Heterochromatin is further classified into two forms – constitutive heterochromatin and facultative heterochromatin.
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The extent of chromatin compaction can be studied by staining chromatin using specific DNA binding dyes. Under the microscope, the dense-compacted regions take up more dye, appearing darker, while the less-compact areas take up less dye and appear lighter. Based on the compaction level, chromatins are classified into two primary forms – euchromatin and heterochromatin.
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The histone proteins have a flexible N-terminal tail extending out from the nucleosome. These histone tails are often subjected to post-translational modifications such as acetylation, methylation, phosphorylation, and ubiquitination. Particular combinations of these modifications form “histone codes” that influence the chromatin folding and tissue-specific gene expression.
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Related Experiment Video

Updated: May 3, 2026

Isolation and Cultivation of Neural Progenitors Followed by Chromatin-Immunoprecipitation of Histone 3 Lysine 79 Dimethylation Mark
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Constancy of wheat histones during development.

S Spiker1, L Krishnaswamy

  • 1Division of Biology, Kansas State University, 66502, Manhattan, Kansas, USA.

Planta
|January 30, 2014
PubMed
Summary
This summary is machine-generated.

Wheat seedling histones were analyzed and found to be similar to calf thymus and pea histones. Researchers observed no significant differences in histone fractions across various wheat tissues and growth stages.

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Isolation of Histone from Sorghum Leaf Tissue for Top Down Mass Spectrometry Profiling of Potential Epigenetic Markers
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Area of Science:

  • Plant molecular biology
  • Biochemistry
  • Wheat genetics

Background:

  • Histones are crucial proteins involved in DNA packaging and gene regulation in eukaryotes.
  • Understanding histone diversity across plant species and tissues is important for comprehending epigenetic mechanisms.

Purpose of the Study:

  • To compare histone protein fractions extracted from different wheat tissues and developmental stages.
  • To investigate the similarity of wheat histones to those found in other model organisms like peas and calf thymus.

Main Methods:

  • Histone extraction from various wheat plant parts (leaves, shoots, roots) at different developmental stages.
  • Analysis of extracted histones using polyacrylamide-gel electrophoresis (PAGE).
  • Comparison of electrophoretic mobility and relative quantities of histone fractions.

Main Results:

  • No significant differences were observed in the electrophoretic mobility or relative quantities of histone fractions across different wheat tissues and growth conditions.
  • Wheat histones exhibited fractions with identical electrophoretic mobility to calf thymus and pea histones F2a1 and F3.
  • Major wheat histone fractions showed similar electrophoretic mobilities to pea histones F1, F2b, and F2a2.

Conclusions:

  • Wheat histones are highly conserved and share significant similarities with histones from other species.
  • The observed conservation suggests a fundamental role of these histone types in plant biology.
  • This study provides a comparative basis for further research into wheat histone function and epigenetic regulation.