An intramolecular g-quadruplex structure is required for binding of telomeric repeat-containing RNA to the telomeric protein TRF2. Biffi, G., Tannahill, D., & Balasubramanian, S. Journal of the American Chemical Society, 134(29):11974–6, July, 2012.
An intramolecular g-quadruplex structure is required for binding of telomeric repeat-containing RNA to the telomeric protein TRF2. [link]Paper  doi  abstract   bibtex   
Telomeric repeat-containing RNA (TERRA) is important for telomere regulation, but the structural basis for how TERRA localizes to chromosome ends is unknown. Here we report on studies exploring whether the TERRA G-quadruplex structure is critical for binding to telomeres. We demonstrate that the telomeric protein TRF2 binds TERRA via interactions that necessitate the formation of a G-quadruplex structure rather than the TERRA sequence per se. We also show that TRF2 simultaneously binds TERRA and telomeric duplex or G-quadruplex DNA. These observations suggest that the TERRA G-quadruplex is a key feature of telomere organization.
@article{Biffi2012,
	title = {An intramolecular g-quadruplex structure is required for binding of telomeric repeat-containing {RNA} to the telomeric protein {TRF2}.},
	volume = {134},
	issn = {1520-5126},
	url = {http://www.ncbi.nlm.nih.gov/pubmed/22780456},
	doi = {10.1021/ja305734x},
	abstract = {Telomeric repeat-containing RNA (TERRA) is important for telomere regulation, but the structural basis for how TERRA localizes to chromosome ends is unknown. Here we report on studies exploring whether the TERRA G-quadruplex structure is critical for binding to telomeres. We demonstrate that the telomeric protein TRF2 binds TERRA via interactions that necessitate the formation of a G-quadruplex structure rather than the TERRA sequence per se. We also show that TRF2 simultaneously binds TERRA and telomeric duplex or G-quadruplex DNA. These observations suggest that the TERRA G-quadruplex is a key feature of telomere organization.},
	number = {29},
	journal = {Journal of the American Chemical Society},
	author = {Biffi, Giulia and Tannahill, David and Balasubramanian, Shankar},
	month = jul,
	year = {2012},
	pmid = {22780456},
	keywords = {\#nosource},
	pages = {11974--6},
}

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