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Genomic analysis of mouse VL30 retrotransposons

Overview of attention for article published in Mobile DNA, May 2016
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Title
Genomic analysis of mouse VL30 retrotransposons
Published in
Mobile DNA, May 2016
DOI 10.1186/s13100-016-0066-8
Pubmed ID
Authors

Georgios Markopoulos, Dimitrios Noutsopoulos, Stefania Mantziou, Demetrios Gerogiannis, Soteroula Thrasyvoulou, Georgios Vartholomatos, Evangelos Kolettas, Theodore Tzavaras

Abstract

Retrotransposons are mobile elements that have a high impact on shaping the mammalian genomes. Since the availability of whole genomes, genomic analyses have provided novel insights into retrotransposon biology. However, many retrotransposon families and their possible genomic impact have not yet been analysed. Here, we analysed the structural features, the genomic distribution and the evolutionary history of mouse VL30 LTR-retrotransposons. In total, we identified 372 VL30 sequences categorized as 86 full-length and 49 truncated copies as well as 237 solo LTRs, with non-random chromosomal distribution. Full-length VL30s were highly conserved elements with intact retroviral replication signals, but with no protein-coding capacity. Analysis of LTRs revealed a high number of common transcription factor binding sites, possibly explaining the known inducible and tissue-specific expression of individual elements. The overwhelming majority of full-length and truncated elements (82/86 and 40/49, respectively) contained one or two specific motifs required for binding of the VL30 RNA to the poly-pyrimidine tract-binding protein-associated splicing factor (PSF). Phylogenetic analysis revealed three VL30 groups with the oldest emerging ~17.5 Myrs ago, while the other two were characterized mostly by new genomic integrations. Most VL30 sequences were found integrated either near, adjacent or inside transcription start sites, or into introns or at the 3' end of genes. In addition, a significant number of VL30s were found near Krueppel-associated box (KRAB) genes functioning as potent transcriptional repressors. Collectively, our study provides data on VL30s related to their: (a) number and structural features involved in their transcription that play a role in steroidogenesis and oncogenesis; (b) evolutionary history and potential for retrotransposition; and (c) unique genomic distribution and impact on gene expression.

Twitter Demographics

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Mendeley readers

The data shown below were compiled from readership statistics for 21 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 21 100%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 6 29%
Student > Master 3 14%
Researcher 3 14%
Student > Bachelor 2 10%
Unspecified 1 5%
Other 2 10%
Unknown 4 19%
Readers by discipline Count As %
Agricultural and Biological Sciences 6 29%
Biochemistry, Genetics and Molecular Biology 4 19%
Pharmacology, Toxicology and Pharmaceutical Science 1 5%
Unspecified 1 5%
Nursing and Health Professions 1 5%
Other 3 14%
Unknown 5 24%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 11 May 2016.
All research outputs
#5,537,088
of 7,684,314 outputs
Outputs from Mobile DNA
#99
of 120 outputs
Outputs of similar age
#171,936
of 267,571 outputs
Outputs of similar age from Mobile DNA
#4
of 4 outputs
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