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[[Image:439d.gif|left|200px]]


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==5'-R(*CP*UP*GP*GP*GP*CP*GP*G)-3', 5'-R(*CP*CP*GP*CP*CP*UP*GP*G)-3'==
The line below this paragraph, containing "STRUCTURE_439d", creates the "Structure Box" on the page.
<StructureSection load='439d' size='340' side='right'caption='[[439d]], [[Resolution|resolution]] 1.60&Aring;' scene=''>
You may change the PDB parameter (which sets the PDB file loaded into the applet)
== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[439d]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=439D OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=439D FirstGlance]. <br>
or leave the SCENE parameter empty for the default display.
</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>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BA:BARIUM+ION'>BA</scene></td></tr>
{{STRUCTURE_439d|  PDB=439d  |  SCENE= }}
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=439d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=439d OCA], [https://pdbe.org/439d PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=439d RCSB], [https://www.ebi.ac.uk/pdbsum/439d PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=439d ProSAT]</span></td></tr>
 
</table>
'''5'-R(*CP*UP*GP*GP*GP*CP*GP*G)-3', 5'-R(*CP*CP*GP*CP*CP*UP*GP*G)-3''''
<div style="background-color:#fffaf0;">
 
== Publication Abstract from PubMed ==
 
==Overview==
The structure of the RNA duplex r(CUGGGCGG).r(CCGCCUGG) has been determined at 1.6 A resolution and refined to a final R factor of 18.3% (R(free) = 24.1%). The sequence of the RNA fragment resembles domain E of Thermus flavus 5S rRNA. A previously undescribed wobble-like G.C base-pair formation is found. Owing to the observed hydrogen-bond network, it is proposed that the cytosine is protonated at position N3. The unusual base-pair formation is presumably strained by intermolecular interactions. In this context, crystal packing and particular intermolecular contacts may have direct influence on the three-dimensional structure. Furthermore, this structure includes two G.U wobble base pairs in tandem conformation, with the purines forming a so-called 'cross-strand G stack'.
The structure of the RNA duplex r(CUGGGCGG).r(CCGCCUGG) has been determined at 1.6 A resolution and refined to a final R factor of 18.3% (R(free) = 24.1%). The sequence of the RNA fragment resembles domain E of Thermus flavus 5S rRNA. A previously undescribed wobble-like G.C base-pair formation is found. Owing to the observed hydrogen-bond network, it is proposed that the cytosine is protonated at position N3. The unusual base-pair formation is presumably strained by intermolecular interactions. In this context, crystal packing and particular intermolecular contacts may have direct influence on the three-dimensional structure. Furthermore, this structure includes two G.U wobble base pairs in tandem conformation, with the purines forming a so-called 'cross-strand G stack'.


==About this Structure==
Structure of an RNA duplex with an unusual G.C pair in wobble-like conformation at 1.6 A resolution.,Perbandt M, Vallazza M, Lippmann C, Betzel C, Erdmann VA Acta Crystallogr D Biol Crystallogr. 2001 Feb;57(Pt 2):219-24. PMID:11173467<ref>PMID:11173467</ref>
Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=439D OCA].


==Reference==
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
Structure of an RNA duplex with an unusual G.C pair in wobble-like conformation at 1.6 A resolution., Perbandt M, Vallazza M, Lippmann C, Betzel C, Erdmann VA, Acta Crystallogr D Biol Crystallogr. 2001 Feb;57(Pt 2):219-24. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11173467 11173467]
</div>
[[Category: Betzel, C.]]
<div class="pdbe-citations 439d" style="background-color:#fffaf0;"></div>
[[Category: Erdmann, V A.]]
== References ==
[[Category: Lorenz, S.]]
<references/>
[[Category: Perbandt, M.]]
__TOC__
[[Category: Vallazza, M.]]
</StructureSection>
[[Category: A-rna]]
[[Category: Large Structures]]
[[Category: Fragment of 5s rrna]]
[[Category: Betzel C]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May  4 22:17:53 2008''
[[Category: Erdmann VA]]
[[Category: Lorenz S]]
[[Category: Perbandt M]]
[[Category: Vallazza M]]

Latest revision as of 00:35, 28 December 2023

5'-R(*CP*UP*GP*GP*GP*CP*GP*G)-3', 5'-R(*CP*CP*GP*CP*CP*UP*GP*G)-3'

439d, resolution 1.60Å

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