Journal
TRENDS IN CELL BIOLOGY
Volume 19, Issue 8, Pages 414-422Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tcb.2009.05.002
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Funding
- Deutsche Forschungsgemeinschaft
- Medical Research Council
- Human Frontiers Science Programme
- MRC [MC_U105184333] Funding Source: UKRI
- Medical Research Council [MC_U105184333] Funding Source: researchfish
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Although many biochemical and structural studies have demonstrated that DNA sequences containing runs of adjacent guanines spontaneously fold into G-quadruplex DNA structures in vitro, only recently has evidence started to accumulate for their presence and function in vivo. Genome-wide analyses have revealed that functional genomic regions from highly divergent organisms are enriched in DNA sequences with G-quadruplex-forming potential, suggesting that G-quadruplexes could provide a nucleic-acid-based mechanism for regulating telomere maintenance, as well as transcription, replication and translation. Here, we review recent studies aimed at uncovering the in vivo presence and function of G-quadruplexes in genomes and RNA, with a particular focus on telomeric G-quadruplexes and how their formation and resolution is regulated to permit telomere synthesis.
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