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Epigenomes, Volume 6, Issue 3

2022 September - 14 articles

Cover Story: In eukaryotes, genomic DNA binds to histone proteins and forms nucleosomes, the basic unit of chromatin. Although the amino acid sequences of histones are highly conserved among eukaryotes, divergent histones are found in the deeply branching protozoan groups and certain large DNA viruses. In this review, we highlight the structures and biophysical properties of nucleosomes containing histones from the human pathogenic parasites Giardia lamblia and Leishmania major, and histone-like proteins from the Marseilleviridae amoeba virus family. These findings confirm the shared fundamental principles of DNA compaction systems among evolutionally distant organisms and clarify the species-specific nature of the nucleosome. View this paper
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Articles (14)

  • Article
  • Open Access
10 Citations
5,179 Views
22 Pages

Architecture, Chromatin and Gene Organization of Toxoplasma gondii Subtelomeres

  • Susana M. Contreras,
  • Romina T. Zambrano Siri,
  • Elías M. Rivera,
  • Constanza Cristaldi and ,
  • Laura Kamenetzky,
  • Kami Kim,
  • Marina Clemente,
  • Josefina Ocampo,
  • Laura Vanagas and
  • Sergio O. Angel
  • + 5 authors+ 0 author

15 September 2022

Subtelomeres (ST) are chromosome regions that separate telomeres from euchromatin and play relevant roles in various biological processes of the cell. While their functions are conserved, ST structure and genetic compositions are unique to each speci...

  • Review
  • Open Access
26 Citations
12,307 Views
30 Pages

6 September 2022

The polycomb group (PcG) proteins are a subset of transcription regulators highly conserved throughout evolution. Their principal role is to epigenetically modify chromatin landscapes and control the expression of master transcriptional programs to d...

(This article belongs to the Special Issue Polycomb Proteins)
  • Commentary
  • Open Access
9 Citations
6,243 Views
13 Pages

Neurogenetic and Epigenetic Aspects of Cannabinoids

  • Catherine A. Dennen,
  • Kenneth Blum,
  • Abdalla Bowirrat,
  • Jag Khalsa and ,
  • Panayotis K. Thanos,
  • David Baron,
  • Rajendra D. Badgaiyan,
  • Ashim Gupta,
  • Eric R. Braverman and
  • Mark S. Gold
  • + 5 authors+ 0 author

Cannabis is one of the most commonly used and abused illicit drugs in the world today. The United States (US) currently has the highest annual prevalence rate of cannabis consumption in the world, 17.9% in individuals aged 12 or older, and it is on t...

  • Review
  • Open Access
6 Citations
6,633 Views
11 Pages

Meiosis is specialized cell division during gametogenesis that produces genetically unique gametes via homologous recombination. Meiotic homologous recombination entails repairing programmed 200–300 DNA double-strand breaks generated during the...

(This article belongs to the Special Issue Chromatin Unlimited)
  • Review
  • Open Access
5 Citations
7,544 Views
26 Pages

De Novo Polycomb Recruitment and Repressive Domain Formation

  • Itzel Alejandra Hernández-Romero and
  • Victor Julian Valdes

Every cell of an organism shares the same genome; even so, each cellular lineage owns a different transcriptome and proteome. The Polycomb group proteins (PcG) are essential regulators of gene repression patterning during development and homeostasis....

(This article belongs to the Special Issue Polycomb Proteins)
  • Review
  • Open Access
5 Citations
5,190 Views
9 Pages

Experimental and Computational Approaches for Non-CpG Methylation Analysis

  • Deepa Ramasamy,
  • Arunagiri Kuha Deva Magendhra Rao,
  • Thangarajan Rajkumar and
  • Samson Mani

Cytosine methylation adjacent to adenine, thymine, and cytosine residues but not guanine of the DNA is distinctively known as non-CpG methylation. This CA/CT/CC methylation accounts for 15% of the total cytosine methylation and varies among different...

  • Review
  • Open Access
34 Citations
9,627 Views
18 Pages

Embryonic development is a highly intricate and complex process. Different regulatory mechanisms cooperatively dictate the fate of cells as they progress from pluripotent stem cells to terminally differentiated cell types in tissues. A crucial regula...

(This article belongs to the Special Issue Polycomb Proteins)
  • Review
  • Open Access
17 Citations
7,212 Views
16 Pages

In eukaryotes, genomic DNA is bound with histone proteins and packaged into chromatin. The nucleosome, a fundamental unit of chromatin, regulates the accessibility of DNA to enzymes involved in gene regulation. During the past few years, structural a...

(This article belongs to the Special Issue Chromatin Unlimited)
  • Review
  • Open Access
20 Citations
6,567 Views
15 Pages

Epigenomic Approaches for the Diagnosis of Rare Diseases

  • Beatriz Martinez-Delgado and
  • Maria J. Barrero

Rare diseases affect more than 300 million people worldwide. Diagnosing rare diseases is a major challenge as they have different causes and etiologies. Careful assessment of clinical symptoms often leads to the testing of the most common genetic alt...

(This article belongs to the Special Issue The Use of Epigenetic Biomarkers as Diagnostic and Therapeutic Options 2.0)
  • Review
  • Open Access
2 Citations
5,729 Views
13 Pages

Mitotic chromosome assembly is an essential preparatory step for accurate transmission of the genome during cell division. During the past decades, biochemical approaches have uncovered the molecular basis of mitotic chromosomes. For example, by usin...

(This article belongs to the Special Issue Chromatin Unlimited)
  • Editorial
  • Open Access
7 Citations
3,832 Views
3 Pages

Epigenomic modifications are unique in the type and amount of chemical modification at each chromosomal location, can vary from cell to cell, and can be externally modulated by small molecules. In recent years, genome-wide epigenomic modifications ha...

  • Article
  • Open Access
5 Citations
4,568 Views
14 Pages

Transcriptional suppression is characteristic of extreme stress responses, speculated to preserve energetic resources in the maintenance of hypometabolism. In recent years, epigenetic regulation has become heavily implicated in stress adaptation of m...

  • Communication
  • Open Access
8 Citations
4,778 Views
11 Pages

Global m6A RNA Methylation in SARS-CoV-2 Positive Nasopharyngeal Samples in a Mexican Population: A First Approximation Study

  • Jorge Luis Batista-Roche,
  • Bruno Gómez-Gil,
  • Gertrud Lund,
  • César Alejandro Berlanga-Robles and
  • Alejandra García-Gasca

The Severe Acute Respiratory Syndrome-Coronavirus-2 (SARS-CoV-2) is the causal agent of COVID-19 (Coronavirus Disease-19). Both mutation and/or recombination events in the SARS-CoV-2 genome have resulted in variants that differ in transmissibility an...

(This article belongs to the Special Issue The Use of Epigenetic Biomarkers as Diagnostic and Therapeutic Options 2.0)
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Epigenomes - ISSN 2075-4655