Article ; Online: Perfect and imperfect views of ultraconserved sequences.
2021 Volume 23, Issue 3, Page(s) 182–194
Abstract: Across the human genome, there are nearly 500 'ultraconserved' elements: regions of at least 200 contiguous nucleotides that are perfectly conserved in both the mouse and rat genomes. Remarkably, the majority of these sequences are non-coding, and many ... ...
Abstract | Across the human genome, there are nearly 500 'ultraconserved' elements: regions of at least 200 contiguous nucleotides that are perfectly conserved in both the mouse and rat genomes. Remarkably, the majority of these sequences are non-coding, and many can function as enhancers that activate tissue-specific gene expression during embryonic development. From their first description more than 15 years ago, their extreme conservation has both fascinated and perplexed researchers in genomics and evolutionary biology. The intrigue around ultraconserved elements only grew with the observation that they are dispensable for viability. Here, we review recent progress towards understanding the general importance and the specific functions of ultraconserved sequences in mammalian development and human disease and discuss possible explanations for their extreme conservation. |
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MeSH term(s) | Animals ; Conserved Sequence/physiology ; Embryonic Development/genetics ; Enhancer Elements, Genetic ; Female ; Genome/genetics ; Genomics/methods ; Genomics/trends ; History, 21st Century ; Humans ; Mammals/genetics ; Mice ; Pregnancy ; Rats |
Language | English |
Publishing date | 2021-11-11 |
Publishing country | England |
Document type | Historical Article ; Journal Article ; Research Support, N.I.H., Extramural ; Research Support, U.S. Gov't, Non-P.H.S. ; Review |
ZDB-ID | 2035157-4 |
ISSN | 1471-0064 ; 1471-0056 |
ISSN (online) | 1471-0064 |
ISSN | 1471-0056 |
DOI | 10.1038/s41576-021-00424-x |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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