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TRIPLEX DNA STRUCTURES

Frank-Kamenetskii, Maxim D., Mirkin, Sergei M.·1995·Annual Review of Biochemistry

Abstract

A DNA triplex is formed when pyrimidine or purine bases occupy the major groove of the DNA double Helix forming Hoogsteen pairs with purines of the Watson-Crick basepairs. Intermolecular triplexes are formed between triplex forming oligonucleotides (TFO) and target sequences on duplex DNA. Intramolecular triplexes are the major elements of H-DNAs, unusual DNA structures, which are formed in homopurine-homopyrimidine regions of supercoiled DNAs. TFOs are promising gene-drugs, which can be used in an anti-gene strategy, that attempt to modulate gene activity in vivo. Numerous chemical modifications of TFO are known. In peptide nucleic acid (PNA), the sugarphosphate backbone is replaced with a protein-like backbone. PNAs form P-loops while interacting with duplex DNA fonning triplex with one of DNA strands leaving the other strand displaced. Very unusual recombination or parallel triplexes, or R-DNA, have been assumed to form under RecA protein in the course of homologous recombination.

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Metadata

Authors
Frank-Kamenetskii, M. D., & Mirkin, S. M.
Venue
Annual Review of Biochemistry
Published
1995-06
Volume
64
Issue
1
Pages
65-95
ISSN
  • 0066-4154 (ISSN-L)
  • 1545-4509
OpenAlex
W2123017921
Cited by
808
References
0
FWCI
11.61
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: TRIPLEX DNA STRUCTURES. https://app.cochat.ai/papers/10.1146/annurev.bi.64.070195.000433
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Frank-Kamenetskii, M. D., & Mirkin, S. M. (1995). TRIPLEX DNA STRUCTURES. Annual Review of Biochemistry. https://doi.org/10.1146/annurev.bi.64.070195.000433

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