Related Experiment Video
Updated: Aug 19, 2025

04:04
Real-Time Quantification of the Effects of IS200/IS605 Family-Associated TnpB on Transposon Activity
Published on: January 20, 2023
2.4K
Assembly-Free Detection and Quantification of Transposable Elements with dnaPipeTE
Clément Goubert1,2,3
1Canadian Centre for Computational Genomics, McGill University, Montreal, QC, Canada. goubert.clement@gmail.com.
Methods in Molecular Biology (Clifton, N.J.)
|November 30, 2022
Summary
Detecting transposable elements (TEs) is challenging due to genome assembly limitations. dnaPipeTE analyzes unassembled short reads for accurate TE detection, classification, and quantification in comparative genomics.
Area of Science:
- Genomics
- Molecular Ecology
- Bioinformatics
Background:
- Transposable elements (TEs) are crucial in evolutionary genomics but difficult to detect and quantify.
- Current TE detection tools often rely on genome assemblies, limiting cross-species comparisons due to assembly completeness issues.
Purpose of the Study:
- To present dnaPipeTE as a solution for TE detection and quantification directly from unassembled short reads.
- To detail the methodology for comparative analysis of TE content between species using dnaPipeTE.
Main Methods:
- Utilizing dnaPipeTE, a bioinformatics tool designed for TE analysis from raw sequencing reads.
- Demonstrating the installation of a containerized version of dnaPipeTE for reproducibility.
- Outlining the step-by-step process for comparative TE analysis, including data pre-processing and output interpretation.
Main Results:
- dnaPipeTE enables direct TE detection, classification, and quantification from unassembled short reads, bypassing genome assembly limitations.
- The containerized version ensures consistent and reproducible analysis across different computational environments.
- The presented workflow facilitates robust comparative analysis of TE content between species or populations.
Conclusions:
- dnaPipeTE offers a robust and accessible method for analyzing transposable element content directly from short reads.
- This approach overcomes the limitations of genome assembly-dependent tools, improving the comparability of TE analyses.
- The detailed workflow supports researchers in conducting evolutionary and ecological studies involving transposable elements.
Related Concept Videos
Overview of Transposition and Recombination
16.0K
Transposons make up a significant part of genomes of various organisms. Therefore, it is believed that transposition played a major evolutionary role in speciation by changing genome sizes and modifying gene expression patterns. For example, in bacteria, transposition can lead to conferring antibiotic resistance. Movement of transposable elements within the genetic pool of pathogenic bacteria can aid in transfer of antibiotic-resistant genetic elements. In eukaryotes, transposons can carry out...
16.0K
DNA-only Transposons
14.6K
DNA-only transposons are called autonomous transposons since they code for the enzyme transposase that is required for the transposition mechanism. Insertion of transposons can alter gene functions in multiple ways. They can mutate the gene, alter gene expression by introducing a novel promoter or insulator sequence, introduce new splice sites, and change the mRNA transcripts produced, or remodel chromatin structure.
The donor site from where the transposon is excised is either degraded or...
The donor site from where the transposon is excised is either degraded or...
14.6K
piRNA - Piwi-interacting RNAs
7.0K
PIWI-interacting RNAs, or piRNAs, are the most abundant short non-coding RNAs. More than 20,000 genes have been found in humans that code for piRNAs while only 2000 genes have been found for miRNAs. piRNAs can act at the transcriptional and post-transcriptional levels and have a vital role in silencing transposable elements present in germ cells. They are also involved in epigenetic silencing and activation. Previously, they were thought to function only in germ cells but new evidence suggests...
7.0K
Non-LTR Retrotransposons
11.7K
As the name suggests, non-LTR retrotransposons lack the long terminal repeats characteristic of the LTR retrotransposons. Additionally, both LTR and non-LTR retrotransposons use distinct mechanisms of mobilization. Non-LTR retrotransposons are further divided into two classes - Long interspersed nuclear elements (LINEs) and short interspersed nuclear elements (SINEs), both of which occur abundantly in most mammals, including humans. Some of the active non-LTR retrotransposons in humans are L1...
11.7K

