2g3s: Difference between revisions

Revision as of 15:15, 29 July 2008

This article has been automatically seeded. Changes to this page should pertain to the PDB entry only and not to the protein or biomolecule in general.

File:2g3s.png

Template:STRUCTURE 2g3s

RNA structure containing GU base pairsRNA structure containing GU base pairs

Template:ABSTRACT PUBMED 16581850

About this StructureAbout this Structure

Full crystallographic information is available from OCA.

ReferenceReference

The crystal structure at 1.5 angstroms resolution of an RNA octamer duplex containing tandem G.U basepairs., Jang SB, Hung LW, Jeong MS, Holbrook EL, Chen X, Turner DH, Holbrook SR, Biophys J. 2006 Jun 15;90(12):4530-7. Epub 2006 Mar 31. PMID:16581850

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OCA

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-'''RNA structure containing GU base pairs'''
+===RNA structure containing GU base pairs===
-==Overview==
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-The crystal structure of the RNA octamer, 5'-GGCGUGCC-3' has been determined from x-ray diffraction data to 1.5 angstroms resolution. In the crystal, this oligonucleotide forms five self-complementary double-helices in the asymmetric unit. Tandem 5'GU/3'UG basepairs comprise an internal loop in the middle of each duplex. The NMR structure of this octameric RNA sequence is also known, allowing comparison of the variation among the five crystallographic duplexes and the solution structure. The G.U pairs in the five duplexes of the crystal form two direct hydrogen bonds and are stabilized by water molecules that bridge between the base of guanine (N2) and the sugar (O2') of uracil. This contrasts with the NMR structure in which only one direct hydrogen bond is observed for the G.U pairs. The reduced stability of the r(CGUG)2 motif relative to the r(GGUC)2 motif may be explained by the lack of stacking of the uracil bases between the Watson-Crick and G.U pairs as observed in the crystal structure.
+The line below this paragraph, {{ABSTRACT_PUBMED_16581850}}, adds the Publication Abstract to the page
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 [[Category: Rna crystal structure]]
 [[Category: Tandem gu base pair]]
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