104d
From Proteopedia
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[[Image:104d.jpg|left|200px]] | [[Image:104d.jpg|left|200px]] | ||
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'''DNA DUPLEXES FLANKED BY HYBRID DUPLEXES: THE SOLUTION STRUCTURE OF CHIMERIC JUNCTIONS IN''' | '''DNA DUPLEXES FLANKED BY HYBRID DUPLEXES: THE SOLUTION STRUCTURE OF CHIMERIC JUNCTIONS IN''' | ||
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==About this Structure== | ==About this Structure== | ||
- | + | Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=104D OCA]. | |
==Reference== | ==Reference== | ||
DNA duplexes flanked by hybrid duplexes: the solution structure of chimeric junctions in [r(cgcg)d(TATACGCG)]2., Zhu L, Salazar M, Reid BR, Biochemistry. 1995 Feb 21;34(7):2372-80. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/7857947 7857947] | DNA duplexes flanked by hybrid duplexes: the solution structure of chimeric junctions in [r(cgcg)d(TATACGCG)]2., Zhu L, Salazar M, Reid BR, Biochemistry. 1995 Feb 21;34(7):2372-80. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/7857947 7857947] | ||
- | [[Category: Protein complex]] | ||
[[Category: Reid, B R.]] | [[Category: Reid, B R.]] | ||
[[Category: Salazar, M.]] | [[Category: Salazar, M.]] | ||
[[Category: Zhu, L.]] | [[Category: Zhu, L.]] | ||
- | [[Category: | + | [[Category: Dna]] |
- | [[Category: | + | [[Category: Duplex]] |
- | [[Category: | + | [[Category: Hybrid]] |
- | [[Category: | + | [[Category: Junction]] |
- | [[Category: | + | [[Category: Nmr]] |
- | [[Category: | + | [[Category: Rna]] |
- | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 09:24:43 2008'' | |
- | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + |
Revision as of 06:24, 2 May 2008
DNA DUPLEXES FLANKED BY HYBRID DUPLEXES: THE SOLUTION STRUCTURE OF CHIMERIC JUNCTIONS IN
Overview
Hybrid duplexes and chimeric duplexes containing hybrid segments linked to pure DNA (or pure RNA) segments are involved in transcription and replication, as well as reverse transcription. A complete understanding of the mechanism of these processes requires detailed information on such duplexes and the junctions between duplexes of differing structure. Using two-dimensional NMR, restrained molecular dynamics and mechanics, and back-calculation refinement against the nuclear Overhauser effect spectra at various mixing times, we have determined the solution structure of the chimeric duplex [r(cgcg)d-(TATACGCG)]2 containing a pure DNA segment in the center of a hybrid duplex. The solution structure differs from the previously determined X-ray structure of the analogous duplex [r(gcg)d(TATACGC)]2, which was found to be A-form throughout [Wang, A.H.-J., et al. (1982) Nature 299, 601-604]. The basic features of the solution structure are (a) the RNA residues are all A-form with C3'-endo sugar conformations, (b) the central DNA segment is B-form, (c) the transition from A-form RNA sugar conformations to B-form DNA sugar conformations involves only the dT5 base step, and (d) although the sugar conformations of the DNA residues A6-G12 are closer to B-form, the basic helical properties of the peripheral RNA.DNA hybrid segments are closer to typical A-form than to B-form.
About this Structure
Full crystallographic information is available from OCA.
Reference
DNA duplexes flanked by hybrid duplexes: the solution structure of chimeric junctions in [r(cgcg)d(TATACGCG)]2., Zhu L, Salazar M, Reid BR, Biochemistry. 1995 Feb 21;34(7):2372-80. PMID:7857947 Page seeded by OCA on Fri May 2 09:24:43 2008
Categories: Reid, B R. | Salazar, M. | Zhu, L. | Dna | Duplex | Hybrid | Junction | Nmr | Rna