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Related Concept Videos

Histone Variants at the Centromere02:30

Histone Variants at the Centromere

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Histone variants are the histone proteins with structural and sequence variations. These variants may be regarded as “mutant” forms that replace their canonical histone counterparts in the nucleosomes. Specific post-translational modifications on the histone variants enable further chromatin complexity and regulate tissue-specific gene expression. The most common histone variants are from histone H2A, H2B, and linker histone H1 families. However, several variants of histone H3...
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Chromatin Position Affects Gene Expression02:35

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Chromatin is the massive complex of DNA and proteins packaged inside the nucleus. The complexity of chromatin folding and how it is packaged inside the nucleus greatly influences  access to genetic information. Generally, the nucleus' periphery is considered transcriptionally repressive, while the cell's interior is considered a transcriptionally active area. 
Topologically Associated Domains (TADs)
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Chromosome Structure02:40

Chromosome Structure

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A functional eukaryotic chromosome must contain three elements: a centromere, telomeres, and numerous origins of replication.
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Ribosomal RNA Synthesis02:53

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Ribosome synthesis is a highly complex and coordinated process involving more than 200 assembly factors. The synthesis and processing of ribosomal components occurs not only in the nucleolus but also in the nucleoplasm and the cytoplasm of eukaryotic cells.
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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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Heterochromatin02:38

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 that take up more dye are called heterochromatin. Heterochromatin is further classified into two forms – constitutive heterochromatin and facultative heterochromatin.
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Related Experiment Video

Updated: Dec 25, 2025

Immunofluorescence Analysis of Endogenous and Exogenous Centromere-kinetochore Proteins
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Immunofluorescence Analysis of Endogenous and Exogenous Centromere-kinetochore Proteins

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Centromeric RNA and Its Function at and Beyond Centromeric Chromatin.

Samuel Corless1, Saskia Höcker1, Sylvia Erhardt1

  • 1Center for Molecular Biology Heidelberg (ZMBH), DKFZ-ZMBH-Alliance, Heidelberg University, Im Neuenheimer Feld 282, 69120 Heidelberg, Germany.

Journal of Molecular Biology
|April 6, 2020
PubMed
Summary
This summary is machine-generated.

Centromere-derived RNAs (cenRNAs) are vital for genome stability and centromere formation. Their dysregulation is linked to cancer, highlighting the need for further study into their composition and function.

Keywords:
centromeric RNAcentromeric chromatinheterochromatinsatellite repeatstranscription

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Area of Science:

  • Genetics
  • Molecular Biology
  • Epigenetics

Background:

  • Centromeric chromatin is essential for accurate genome segregation and stability.
  • Centromere-derived RNAs (cenRNAs) are crucial components of centromere structure, though recently investigated.
  • CenRNAs are necessary for forming CENP-A chromatin and pericentromeric heterochromatin.

Purpose of the Study:

  • To provide a detailed appraisal of cenRNA composition, regulation, and function.
  • To discuss challenges in cenRNA research.
  • To explore the role of cenRNAs within different centromeric chromatin domains.

Main Methods:

  • Literature review focusing on centromeric transcription and cenRNAs.
  • Analysis of existing studies on cenRNA identification and function.
  • Discussion of experimental challenges in studying cenRNAs.

Main Results:

  • Centromeric transcription is required for proper centromeric chromatin formation.
  • cenRNAs play a role in the centromere-kinetochore interface.
  • Overexpression of cenRNAs is observed in some cancers and can drive tumor formation.

Conclusions:

  • cenRNAs are critical for centromere structure, function, and genome stability.
  • Further research is needed to understand cenRNA composition, regulation, and their role in disease.
  • Understanding cenRNAs may offer new insights into cancer development and treatment.