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2016 ; 55
(11
): 1615-30
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Biochemical Methods To Investigate lncRNA and the Influence of lncRNA:Protein
Complexes on Chromatin
#MMPMID26859437
McFadden EJ
; Hargrove AE
Biochemistry
2016[Mar]; 55
(11
): 1615-30
PMID26859437
show ga
Long noncoding RNAs (lncRNAs), defined as nontranslated transcripts greater than
200 nucleotides in length, are often differentially expressed throughout
developmental stages, tissue types, and disease states. The identification,
visualization, and suppression/overexpression of these sequences have revealed
impacts on a wide range of biological processes, including epigenetic regulation.
Biochemical investigations on select systems have revealed striking insight into
the biological roles of lncRNAs and lncRNA:protein complexes, which in turn
prompt even more unanswered questions. To begin, multiple protein- and
RNA-centric technologies have been employed to isolate lncRNA:protein and
lncRNA:chromatin complexes. LncRNA interactions with the multi-subunit protein
complex PRC2, which acts as a transcriptional silencer, represent some of the few
cases where the binding affinity, selectivity, and activity of a lncRNA:protein
complex have been investigated. At the same time, recent reports of full-length
lncRNA secondary structures suggest the formation of complex structures with
multiple independent folding domains and pave the way for more detailed
structural investigations and predictions of lncRNA three-dimensional structure.
This review will provide an overview of the methods and progress made to date as
well as highlight new methods that promise to further inform the molecular
recognition, specificity, and function of lncRNAs.
|Animals
[MESH]
|Chromatin Assembly and Disassembly/*physiology
[MESH]