View source for 2gbh


==NMR structure of stem region of helix-35 of 23S E.coli ribosomal RNA (residues 736-760)==
<StructureSection load='2gbh' size='340' side='right'caption='[[2gbh]]' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2gbh]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2GBH OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2GBH FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GMP:GUANOSINE'>GMP</scene>, <scene name='pdbligand=PSU:PSEUDOURIDINE-5-MONOPHOSPHATE'>PSU</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=2gbh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2gbh OCA], [https://pdbe.org/2gbh PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2gbh RCSB], [https://www.ebi.ac.uk/pdbsum/2gbh PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2gbh ProSAT]</span></td></tr>
</table>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
A new three-dimensional NMR experiment is described that yields five scalar or dipolar couplings from a single cross-peak between three spins. The method is based on the E.COSY principle and is demonstrated for the H1'-C1'-C2' fragment of ribose sugars in a uniformly 13C-enriched 24-nucleotide RNA stem-loop structure, for which a complete set of couplings was obtained for all nonmodified nucleotides. The values of the isotropic J couplings and the 13C1' and 13C2' chemical shifts define the sugar pucker. Once the sugar pucker is known, the five dipolar couplings between C1'-H1', C2'-H2', H1'-H2', C1'-H2', and C2'-H1', together with C1'-C2', C3'-H3', and C4'-H4' available from standard experiments, can be used to derive the five unknowns that define the local alignment tensor, thereby simultaneously providing information on relative orientation and dynamics of the ribose units. Data indicate rather uniform alignment for all stem nucleotides in the 24-nt stem-loop structure, with only a modest reduction in order for the terminal basepair, but significantly increased mobility in part of the loop region. The method is applicable to proteins, nucleic acids, and carbohydrates, provided 13C enrichment is available.

Measurement of five dipolar couplings from a single 3D NMR multiplet applied to the study of RNA dynamics.,O'Neil-Cabello E, Bryce DL, Nikonowicz EP, Bax A J Am Chem Soc. 2004 Jan 14;126(1):66-7. PMID:14709062<ref>PMID:14709062</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 2gbh" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Bax A]]
[[Category: Boisbouvier J]]
[[Category: Bryce D]]
[[Category: Grishaev A]]
[[Category: Jaroniec C]]
[[Category: Miclet E]]
[[Category: Nikonovicz E]]
[[Category: O'Neil-Cabello E]]
[[Category: Ying J]]