: MeSH: G-Quadruplexes

Genetic Phenomena > Genetic Structures > Nucleic Acid Conformation > G-Quadruplexes

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G-Quadruplexes

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Higher-order DNA and RNA structures formed from guanine-rich sequences. They are formed around a core of at least 2 stacked tetrads of hydrogen-bonded GUANINE bases. They can be formed from one two or four separate strands of DNA (or RNA) and can display a wide variety of topologies, which are a consequence of various combinations of strand direction, length, and sequence. (From Nucleic Acids Res. 2006;34(19):5402-15)

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