423d: Difference between revisions

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== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[423d]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=423D OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=423D FirstGlance]. <br>
<table><tr><td colspan='2'>[[423d]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=423D OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=423D FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.6&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=423d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=423d OCA], [https://pdbe.org/423d PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=423d RCSB], [https://www.ebi.ac.uk/pdbsum/423d PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=423d ProSAT]</span></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=423d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=423d OCA], [https://pdbe.org/423d PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=423d RCSB], [https://www.ebi.ac.uk/pdbsum/423d PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=423d ProSAT]</span></td></tr>
</table>
</table>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Transcriptional regulation in papillomaviruses depends on sequence-specific binding of the regulatory protein E2 to several sites in the viral genome. Crystal structures of bovine papillomavirus E2 DNA targets reveal a conformational variant of B-DNA characterized by a roll-induced writhe and helical repeat of 10.5 bp per turn. A comparison between the free and the protein-bound DNA demonstrates that the intrinsic structure of the DNA regions contacted directly by the protein and the deformability of the DNA region that is not contacted by the protein are critical for sequence-specific protein/DNA recognition and hence for gene-regulatory signals in the viral system. We show that the selection of dinucleotide or longer segments with appropriate conformational characteristics, when positioned at correct intervals along the DNA helix, can constitute a structural code for DNA recognition by regulatory proteins. This structural code facilitates the formation of a complementary protein-DNA interface that can be further specified by hydrogen bonds and nonpolar interactions between the protein amino acids and the DNA bases.
Structural code for DNA recognition revealed in crystal structures of papillomavirus E2-DNA targets.,Rozenberg H, Rabinovich D, Frolow F, Hegde RS, Shakked Z Proc Natl Acad Sci U S A. 1998 Dec 22;95(26):15194-9. PMID:9860945<ref>PMID:9860945</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 423d" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Frolow, F]]
[[Category: Frolow F]]
[[Category: Hegde, R S]]
[[Category: Hegde RS]]
[[Category: Rabinovich, D]]
[[Category: Rabinovich D]]
[[Category: Rozenberg, H]]
[[Category: Rozenberg H]]
[[Category: Shakked, Z]]
[[Category: Shakked Z]]
[[Category: Dna]]
[[Category: Double helix]]
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