In an equimolar ratio the human telomeric oligonucleotides d[AGGG(TTAGGG)(3)] and d[(CCCTAA)(3)CCCT] formed mixed structures of duplex and tetraplex in bis(2-ethylhexyl)sulfosuccinate reverse micelles; only the duplex was observed in aqueous buffer. This finding suggests that heterogeneous confined media in the cell nucleus might induce a significant fraction of the telomeric region of genomic DNA to adopt non-canonical tetraplex structure.
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Pramanik et al. (2012) studied this question.
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