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Analysis of LINE-1 Retrotransposition at the Single Nucleus Level
Published on: April 23, 2016
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[Plant active LTR retrotransposons: a review].
1The Nurturing Station for the State Key Laboratory of Subtropical Sil-viculture, Zhejiang A & F University, Lin'an 311300, Zhejiang, China.
Sheng Wu Gong Cheng Xue Bao = Chinese Journal of Biotechnology
|August 31, 2017
Summary
Long terminal repeat (LTR) retrotransposons are mobile genetic elements found in plant genomes. This review details their structure, sequence features, and regulatory elements, aiding in their identification and functional analysis.
Area of Science:
- Genomics
- Molecular Biology
- Plant Science
Background:
- Long terminal repeat (LTR) retrotransposons are mobile DNA sequences prevalent in eukaryotic genomes.
- They replicate via a copy-paste mechanism using RNA intermediates.
- Active LTR retrotransposons are valuable tools in higher plants for genetic tagging, mutation analysis, and gene function studies.
Purpose of the Study:
- To systematically review the characteristics of active LTR retrotransposons in plants.
- To analyze the sequence features of gag and pol genes and cis-acting elements in LTR regions.
- To provide a foundation for identifying and functionally analyzing plant active LTR retrotransposons.
Main Methods:
- Systematic literature review of plant active LTR retrotransposons.
- Analysis of LTR retrotransposon structures, copy numbers, and genomic distributions.
- Comparative analysis of gag and pol gene sequences and LTR cis-acting elements across different plant species.
Main Results:
- Autonomous active LTR retrotransposons possess LTR regions and encode Gag, Pr, Int, Rt, and Rh proteins.
- Homologous LTR regions contain numerous cis-regulatory elements.
- Specific domains, RVT and RNase_H1_RT, are crucial for Rt and Rh protein function, respectively.
Conclusions:
- Understanding the structural and sequence characteristics of plant active LTR retrotransposons is essential.
- The identified features and domains provide a basis for future research in plant genomics.
- This review facilitates the identification and functional characterization of these mobile genetic elements in plants.
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