Photo: Garry Moore Globallookpress.com
Scientists Medical school at Washington University in St. Louis revealed the mysterious role of jumping genes or transposons, can move within the genome. It turned out that they participate in the folding of the DNA, stabilizing the three-dimensional structure inside the nuclei of cells. About it reported in a press release on Phys.org.
The researchers studied the process of folding DNA in blood cells of mouse and human and found that for the same three-dimensional structures are suited to different nucleotide sequences. It is generally expected that the same functions are performed by similar parts of the genome. In this case the same role played by different DNA fragments, some of which are mobile genetic elements.
Transposons create redundancy of regulatory regions of the genome that determine the switching on and off of genes. This redundancy and makes the genome more stable. Jumping genes help DNA of a mammal to adapt flexibly to changing climate, while preserving the biological functions necessary for life, and protecting the genome from damage.
Video, photo All from Russia.