111d
From Proteopedia
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[[Image:111d.jpg|left|200px]] | [[Image:111d.jpg|left|200px]] | ||
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'''CRYSTAL STRUCTURE AND STABILITY OF A DNA DUPLEX CONTAINING A(ANTI).G(SYN) BASE-PAIRS''' | '''CRYSTAL STRUCTURE AND STABILITY OF A DNA DUPLEX CONTAINING A(ANTI).G(SYN) BASE-PAIRS''' | ||
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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=111D OCA]. | |
==Reference== | ==Reference== | ||
Crystal structure and stability of a DNA duplex containing A(anti).G(syn) base-pairs., Brown T, Leonard GA, Booth ED, Chambers J, J Mol Biol. 1989 May 20;207(2):455-7. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/2754734 2754734] | Crystal structure and stability of a DNA duplex containing A(anti).G(syn) base-pairs., Brown T, Leonard GA, Booth ED, Chambers J, J Mol Biol. 1989 May 20;207(2):455-7. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/2754734 2754734] | ||
- | [[Category: Protein complex]] | ||
[[Category: Booth, E D.]] | [[Category: Booth, E D.]] | ||
[[Category: Brown, T.]] | [[Category: Brown, T.]] | ||
[[Category: Chambers, J.]] | [[Category: Chambers, J.]] | ||
[[Category: Leonard, G A.]] | [[Category: Leonard, G A.]] | ||
- | [[Category: | + | [[Category: B-dna]] |
- | [[Category: | + | [[Category: Double helix]] |
- | [[Category: | + | [[Category: Mismatched]] |
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- | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + |
Revision as of 06:26, 2 May 2008
CRYSTAL STRUCTURE AND STABILITY OF A DNA DUPLEX CONTAINING A(ANTI).G(SYN) BASE-PAIRS
Overview
The synthetic dodecanucleotide d(CGCAAATTGGCG) has been analysed by single-crystal X-ray diffraction techniques and the structure refined to R = 0.16 and 2.25 A resolution, with the location of 94 solvent molecules. The sequence crystallizes as a full turn of a B-DNA helix with ten Watson-Crick base-pairs and two adenine-guanine mispairs. The analysis clearly shows that the mismatches are of the form A(anti).G(syn). Thermal denaturation studies indicate that the stability of the duplex is strongly pH dependent, with a maximum at pH 5.0, suggesting that the base-pair is stabilized by protonation. Three different arrangements have been observed for base-pairs between guanine and adenine and it is likely that A.G mismatch conformation is strongly influenced by dipole-dipole interactions with adjacent base-pairs.
About this Structure
Full crystallographic information is available from OCA.
Reference
Crystal structure and stability of a DNA duplex containing A(anti).G(syn) base-pairs., Brown T, Leonard GA, Booth ED, Chambers J, J Mol Biol. 1989 May 20;207(2):455-7. PMID:2754734 Page seeded by OCA on Fri May 2 09:25:59 2008