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1qbp

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[[Image:1qbp.gif|left|200px]]
 
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==CRYSTAL STRUCTURE OF A BROMINATED RNA HELIX WITH FOUR MISMATCHED BASE PAIRS==
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The line below this paragraph, containing "STRUCTURE_1qbp", creates the "Structure Box" on the page.
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<StructureSection load='1qbp' size='340' side='right'caption='[[1qbp]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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== Structural highlights ==
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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<table><tr><td colspan='2'>[[1qbp]] is a 6 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QBP OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1QBP FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.1&#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=CBV:5-BROMOCYTIDINE+5-(DIHYDROGEN+PHOSPHATE)'>CBV</scene></td></tr>
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{{STRUCTURE_1qbp| PDB=1qbp | SCENE= }}
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1qbp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qbp OCA], [https://pdbe.org/1qbp PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1qbp RCSB], [https://www.ebi.ac.uk/pdbsum/1qbp PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1qbp ProSAT]</span></td></tr>
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</table>
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'''CRYSTAL STRUCTURE OF A BROMINATED RNA HELIX WITH FOUR MISMATCHED BASE PAIRS'''
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__TOC__
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</StructureSection>
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[[Category: Large Structures]]
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==Overview==
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[[Category: Anderson AC]]
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The X-ray crystal structure of a brominated RNA helix with four mismatched base pairs and sequence r(UG(Br)C(Br)CAGUUCGCUGGC)(2) was determined to 2.1 A using the methods of multiwavelength anomalous diffraction (MAD) applied to the bromine K-absorption edge. There are three molecules in the asymmetric unit with unique crystal-packing environments, revealing true conformational variability at high resolution for this sequence. The structure shows that the sequence itself does not define a consistent pattern of solvent molecules, with the exception of the mismatched base pairs, implying that specific RNA-protein interactions would occur only with the nucleotides. There are a number of significant tertiary interactions, some of which are a result of the brominated base pairs and others that are directly mediated by the RNA 2' hydroxyl groups. The mismatched base pairs exhibit a solvent network as well as a stacking pattern with their nearest neighbors that validate previous thermodynamic analysis.
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[[Category: Filman DJ]]
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[[Category: Frederick CA]]
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==About this Structure==
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[[Category: O'Neil RH]]
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Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QBP OCA].
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==Reference==
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Crystal structure of a brominated RNA helix with four mismatched base pairs: An investigation into RNA conformational variability., Anderson AC, O'Neil RH, Filman DJ, Frederick CA, Biochemistry. 1999 Sep 28;38(39):12577-85. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/10504226 10504226]
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[[Category: Anderson, A C.]]
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[[Category: Filman, D J.]]
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[[Category: Frederick, C A.]]
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[[Category: Neil, R H.O.]]
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[[Category: Brominated cytosine]]
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[[Category: Mismatched base pair]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 06:06:21 2008''
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Current revision

CRYSTAL STRUCTURE OF A BROMINATED RNA HELIX WITH FOUR MISMATCHED BASE PAIRS

PDB ID 1qbp

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