1dc0: Difference between revisions

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New page: left|200px<br /><applet load="1dc0" size="450" color="white" frame="true" align="right" spinBox="true" caption="1dc0, resolution 1.3Å" /> '''CRYSTAL STRUCTURE OF ...
 
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[[Image:1dc0.gif|left|200px]]<br /><applet load="1dc0" size="450" color="white" frame="true" align="right" spinBox="true"  
[[Image:1dc0.gif|left|200px]]<br /><applet load="1dc0" size="350" color="white" frame="true" align="right" spinBox="true"  
caption="1dc0, resolution 1.3&Aring;" />
caption="1dc0, resolution 1.3&Aring;" />
'''CRYSTAL STRUCTURE OF AN A/B-DNA INTERMEDIATE CATGGGCCCATG'''<br />
'''CRYSTAL STRUCTURE OF AN A/B-DNA INTERMEDIATE CATGGGCCCATG'''<br />


==Overview==
==Overview==
The DNA dodecamer CATGGGCCCATG in a crystal structure of resolution 1.3 A, has a conformation intermediate between A and B DNA. This trapping of a, stable intermediate suggests that the A and B DNA families are not, discrete, as previously believed. The structure supports a base-centered, rather than a backbone-centered mechanism for the A &lt;--&gt; B transition, mediated by guanine tracts. Interconversion between A and B DNA provides, another means for regulating protein-DNA recognition.
The DNA dodecamer CATGGGCCCATG in a crystal structure of resolution 1.3 A has a conformation intermediate between A and B DNA. This trapping of a stable intermediate suggests that the A and B DNA families are not discrete, as previously believed. The structure supports a base-centered rather than a backbone-centered mechanism for the A &lt;--&gt; B transition mediated by guanine tracts. Interconversion between A and B DNA provides another means for regulating protein-DNA recognition.


==About this Structure==
==About this Structure==
1DC0 is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/ ]. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1DC0 OCA].  
1DC0 is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/ ]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DC0 OCA].  


==Reference==
==Reference==
The structure of a stable intermediate in the A &lt;--&gt; B DNA helix transition., Ng HL, Kopka ML, Dickerson RE, Proc Natl Acad Sci U S A. 2000 Feb 29;97(5):2035-9. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=10688897 10688897]
The structure of a stable intermediate in the A &lt;--&gt; B DNA helix transition., Ng HL, Kopka ML, Dickerson RE, Proc Natl Acad Sci U S A. 2000 Feb 29;97(5):2035-9. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=10688897 10688897]
[[Category: Protein complex]]
[[Category: Protein complex]]
[[Category: Dickerson, R.E.]]
[[Category: Dickerson, R E.]]
[[Category: Kopka, M.L.]]
[[Category: Kopka, M L.]]
[[Category: Ng, H. L.]]
[[Category: Ng, H. L.]]
[[Category: a-dna]]
[[Category: a-dna]]
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[[Category: intermediate]]
[[Category: intermediate]]


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