Volatile evolution of long noncoding RNA repertoires: mechanisms and biological implications. Kapusta, A. & Feschotte, C. Trends Genet., 30(10):439--452, October, 2014. doi abstract bibtex Thousands of genes encoding long noncoding RNAs (lncRNAs) have been identified in all vertebrate genomes thus far examined. The list of lncRNAs partaking in arguably important biochemical, cellular, and developmental activities is steadily growing. However, it is increasingly clear that lncRNA repertoires are subject to weak functional constraint and rapid turnover during vertebrate evolution. We discuss here some of the factors that may explain this apparent paradox, including relaxed constraint on sequence to maintain lncRNA structure/function, extensive redundancy in the regulatory circuits in which lncRNAs act, as well as adaptive and non-adaptive forces such as genetic drift. We explore the molecular mechanisms promoting the birth and rapid evolution of lncRNA genes, with an emphasis on the influence of bidirectional transcription and transposable elements, two pervasive features of vertebrate genomes. Together these properties reveal a remarkably dynamic and malleable noncoding transcriptome which may represent an important source of robustness and evolvability.
@ARTICLE{Kapusta2014-ox,
title = "Volatile evolution of long noncoding {RNA} repertoires:
mechanisms and biological implications",
author = "Kapusta, Aur\'{e}lie and Feschotte, C\'{e}dric",
abstract = "Thousands of genes encoding long noncoding RNAs (lncRNAs) have
been identified in all vertebrate genomes thus far examined. The
list of lncRNAs partaking in arguably important biochemical,
cellular, and developmental activities is steadily growing.
However, it is increasingly clear that lncRNA repertoires are
subject to weak functional constraint and rapid turnover during
vertebrate evolution. We discuss here some of the factors that
may explain this apparent paradox, including relaxed constraint
on sequence to maintain lncRNA structure/function, extensive
redundancy in the regulatory circuits in which lncRNAs act, as
well as adaptive and non-adaptive forces such as genetic drift.
We explore the molecular mechanisms promoting the birth and rapid
evolution of lncRNA genes, with an emphasis on the influence of
bidirectional transcription and transposable elements, two
pervasive features of vertebrate genomes. Together these
properties reveal a remarkably dynamic and malleable noncoding
transcriptome which may represent an important source of
robustness and evolvability.",
journal = "Trends Genet.",
volume = 30,
number = 10,
pages = "439--452",
month = oct,
year = 2014,
keywords = "
AminV;conservation;evolution;lncrna;repeats;review;transposon;zotero;thesis\_intro;Zotero
Import (Aug 30);Zotero Import (Aug 30)/My Library;Zotero Import
(Aug 30)/My Library/lncrna;Classics",
issn = "0168-9525",
doi = "10.1016/j.tig.2014.08.004"
}
Downloads: 0
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