Nucleic Acids Research, 1994, Vol. 22, No. 24 5321-5325
© 1994
Articles |
Exclusion of RNA strands from a purine motif triple helix
Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Centei 600 S. 42nd Street Omaha, NE 68198-6805, USA
*To whom correspondence should be addressed
Received August 30, 1994. Accepted October 19, 1994.
Research concerning oligonucleotide-directed triple helix formation has mainly focused on the binding of DNA oligonucleotides to duplex DNA. The participation of RNA strands In triple helices is also of interest. For the pyrimldine motif (pyrlmldlne- purine (pyrimldlne triplets), systematic substitution of RNA for DNA in one, two, or all three triplex strands has previously been reported. For the purine motif (purine-purine-pyrimldlne triplets), studies have shown only that RNA cannot bind to duplex DNA. To extend this result, we created a DNA triple helix in the purine motif and systematically replaced one, two, or all three strands with RNA. In dramatic contrast to the general accommodation of RNA strands in the pyrimidine triple helix motif, a stable triplex forms In the purine motif only when all three of the substltuent strands are DNA. The lack of triplex formation among any of the other seven possible strand combinations involving RNA suggests that: (i) duplex structures containing RNA cannot be targeted by DNA oligonucleotides In the purine motif; (ii) RNA strands cannot be employed to recognize duplex DNA in the purine motif; and (ill) RNA tertiary structures are likely to contain only isolated base triplets in the purine motif.
![]()
CiteULike
Connotea
Del.icio.us What's this?
This article has been cited by other articles:
![]() |
E. Ayel and C. Escude In vitro selection of oligonucleotides that bind double-stranded DNA in the presence of triplex-stabilizing agents Nucleic Acids Res., December 8, 2009; (2009) gkp1139v1. [Abstract] [Full Text] [PDF] |
||||
![]() |
A. Dallas, S. V. Balatskaya, T.-C. Kuo, H. Ilves, A. V. Vlassov, R. L. Kaspar, K. O. Kisich, S. A. Kazakov, and B. H. Johnston Hairpin ribozyme-antisense RNA constructs can act as molecular lassos Nucleic Acids Res., December 1, 2008; 36(21): 6752 - 6766. [Abstract] [Full Text] [PDF] |
||||
![]() |
V. N. Potaman, E. A. Oussatcheva, Y. L. Lyubchenko, L. S. Shlyakhtenko, S. I. Bidichandani, T. Ashizawa, and R. R. Sinden Length-dependent structure formation in Friedreich ataxia (GAA)n{middle dot}(TTC)n repeats at neutral pH Nucleic Acids Res., February 20, 2004; 32(3): 1224 - 1231. [Abstract] [Full Text] [PDF] |
||||
![]() |
S. Ivanov, Y. Alekseev, J.-R. Bertrand, C. Malvy, and M. B. Gottikh Formation of stable triplexes between purine RNA and pyrimidine oligodeoxyxylonucleotides Nucleic Acids Res., July 15, 2003; 31(14): 4256 - 4263. [Abstract] [Full Text] [PDF] |
||||
![]() |
P. Carmona and M. Molina Binding of oligonucleotides to a viral hairpin forming RNA triplexes with parallel G*G*C triplets Nucleic Acids Res., March 15, 2002; 30(6): 1333 - 1337. [Abstract] [Full Text] [PDF] |
||||
![]() |
H. J. Datta and P. M. Glazer Intracellular generation of single-stranded DNA for chromosomal triplex formation and induced recombination Nucleic Acids Res., December 15, 2001; 29(24): 5140 - 5147. [Abstract] [Full Text] [PDF] |
||||
![]() |
P. R. Hoyne, A. M. Gacy, C. T. McMurray, and L. J. Maher III Stabilities of intrastrand pyrimidine motif DNA and RNA triple helices Nucleic Acids Res., February 1, 2000; 28(3): 770 - 775. [Abstract] [Full Text] [PDF] |
||||
![]() |
E. Pascolo and J.-J. Toulme Double Hairpin Complexes Allow Accommodation of All Four Base Pairs in Triple Helices Containing Both DNA and RNA Strands J. Biol. Chem., September 27, 1996; 271(39): 24187 - 24192. [Abstract] [Full Text] [PDF] |
||||

