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Pure substances consist of only one type of matter. A pure substance can be an element or a compound. An element consists of only one type of atom, while a compound consists of two or more types of atoms held together by a chemical bond.
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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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The periodic table arranges atoms based on increasing atomic number so that elements with the same chemical properties recur periodically. When their electron configurations are added to the table, a periodic recurrence of similar electron configurations in the outer shells of these elements is observed. Because they are in the outer shells of an atom, valence electrons play the most important role in chemical reactions. The outer electrons have the highest energy of the electrons in an atom...
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Genomics is the science of genomes: it is the study of all the genetic material of an organism. In humans, the genome consists of information carried in 23 pairs of chromosomes in the nucleus, as well as mitochondrial DNA. In genomics, both coding and non-coding DNA is sequenced and analyzed. Genomics allows a better understanding of all living things, their evolution, and their diversity. It has a myriad of uses: for example, to build phylogenetic trees, to improve productivity and...
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Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
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TEvarSim: A genome simulator for transposable element (TE) variants.

Jian Miao1, Dawei Li1

  • 1Department of Immunology and Molecular Microbiology, Graduate School of Biomedical Sciences, Texas Tech University Health Sciences Center, Lubbock, Texas, United States of America.

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|January 30, 2026
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Summary

A new simulator, TEvarSim, generates transposable element (TE) variant data for benchmarking detection tools. This advances the accurate study of TEs in health and disease across species.

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Area of Science:

  • Genomics
  • Bioinformatics
  • Molecular Biology

Background:

  • Transposable element (TE) variants contribute significantly to genomic diversity and are implicated in human health, evolution, and disease.
  • Accurate detection of TE variants is crucial, but limited by a lack of robust simulation platforms and ground truth data for method benchmarking.

Purpose of the Study:

  • To develop TEvarSim, a novel and scalable platform for simulating TE-containing genomic data.
  • To facilitate rigorous benchmarking of transposable element variant detection tools.

Main Methods:

  • TEvarSim generates genomic data in various formats (genomes, short/long reads, VCF files) supporting random and real-world TE insertions/deletions.
  • The simulator models natural variation at haplotype, individual, and population levels, enabling large-scale studies.
  • It directly compares simulated VCFs with outputs from TE detection tools for streamlined benchmarking.

Main Results:

  • TEvarSim provides a comprehensive toolkit for simulating, evaluating, and improving TE variant detection methods.
  • The platform supports the simulation of complex TE variants, including those from pangenome graphs.
  • It enables rapid simulation of numerous synthetic chromosomes or genomes.

Conclusions:

  • TEvarSim addresses the critical need for accurate and scalable TE variant simulation.
  • This tool enhances the evaluation of TE detection methods, improving the study of TEs in health and disease.
  • It supports diverse species and large-scale genomic variation studies.