1zfc

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[[Image:1zfc.gif|left|200px]]
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{{Seed}}
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[[Image:1zfc.png|left|200px]]
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{{STRUCTURE_1zfc| PDB=1zfc | SCENE= }}
{{STRUCTURE_1zfc| PDB=1zfc | SCENE= }}
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'''ATC Duplex B-DNA'''
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===ATC Duplex B-DNA===
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==Overview==
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The fundamental question of how sequence defines conformation is explicitly answered if the structures of all possible sequences of a macromolecule are determined. We present here a crystallographic screen of all permutations of the inverted repeat DNA sequence d(CCnnnN6N7N8GG), where N6, N7, and N8 are any of the four naturally occurring nucleotides. At this point, 63 of the 64 possible permutations have been crystallized from a defined set of solutions. When combined with previous work, we have assembled a data set of 37 single-crystal structures from 29 of the sequences in this motif, representing three structural classes of DNA (B-DNA, A-DNA, and four-stranded Holliday junctions). This data set includes a unique set of amphimorphic sequence, those that crystallize in two different conformations and serve to bridge the three structural phases. We have thus constructed a map of DNA structures that can be walked through in single nucleotide steps. Finally, the resulting data set allows us to dissect in detail the stabilization of and conformational variations within structural classes and identify significant conformational deviations within a particular structural class that result from sequence rather than crystal or crystallization effects.
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The line below this paragraph, {{ABSTRACT_PUBMED_15870206}}, adds the Publication Abstract to the page
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(as it appears on PubMed at http://www.pubmed.gov), where 15870206 is the PubMed ID number.
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{{ABSTRACT_PUBMED_15870206}}
==About this Structure==
==About this Structure==
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[[Category: Holliday junction]]
[[Category: Holliday junction]]
[[Category: Molecular structure]]
[[Category: Molecular structure]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 17:33:21 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 20:04:40 2008''

Revision as of 17:04, 28 July 2008

Image:1zfc.png

Template:STRUCTURE 1zfc

ATC Duplex B-DNA

Template:ABSTRACT PUBMED 15870206

About this Structure

Full crystallographic information is available from OCA.

Reference

How sequence defines structure: a crystallographic map of DNA structure and conformation., Hays FA, Teegarden A, Jones ZJ, Harms M, Raup D, Watson J, Cavaliere E, Ho PS, Proc Natl Acad Sci U S A. 2005 May 17;102(20):7157-62. Epub 2005 May 3. PMID:15870206

Page seeded by OCA on Mon Jul 28 20:04:40 2008

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