1mwg

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[[Image:1mwg.jpg|left|200px]]
 
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{{Structure
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==STRUCTURE OF RIBONUCLEIC ACID, NMR, MINIMIZED AVERAGE STRUCTURE==
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|PDB= 1mwg |SIZE=350|CAPTION= <scene name='initialview01'>1mwg</scene>
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<StructureSection load='1mwg' size='340' side='right'caption='[[1mwg]]' scene=''>
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|SITE=
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== Structural highlights ==
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|LIGAND= <scene name='pdbligand=A:ADENOSINE-5&#39;-MONOPHOSPHATE'>A</scene>, <scene name='pdbligand=C:CYTIDINE-5&#39;-MONOPHOSPHATE'>C</scene>, <scene name='pdbligand=G:GUANOSINE-5&#39;-MONOPHOSPHATE'>G</scene>
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<table><tr><td colspan='2'>[[1mwg]] is a 2 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1MWG OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1MWG FirstGlance]. <br>
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|ACTIVITY=
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</td></tr>
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|GENE=
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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=1mwg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1mwg OCA], [https://pdbe.org/1mwg PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1mwg RCSB], [https://www.ebi.ac.uk/pdbsum/1mwg PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1mwg ProSAT]</span></td></tr>
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|DOMAIN=
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</table>
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|RELATEDENTRY=
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<div style="background-color:#fffaf0;">
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1mwg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1mwg OCA], [http://www.ebi.ac.uk/pdbsum/1mwg PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1mwg RCSB]</span>
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== Publication Abstract from PubMed ==
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}}
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'''STRUCTURE OF RIBONUCLEIC ACID, NMR, MINIMIZED AVERAGE STRUCTURE'''
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==Overview==
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The three-dimensional solution structure of the RNA self-complementary duplex [sequence: see text] was derived from two-dimensional NMR and the iterative relaxation matrix approach. Each GA mismatch forms two hydrogen bonds: A-NH6 to G-O6 and A-N1 to G-NH1 (imino). This is the first three-dimensional RNA structure with imino hydrogen-bonded tandem GA mismatches. This GA structure is totally different from the sheared tandem GA structure in [sequence: see text] which also has two hydrogen bonds: A-N7 to G-NH2 and A-NH6 to G-N3 [SantaLucia, J., Jr., &amp; Turner, D. H. (1993) Biochemistry 32, 12612-12623]. In particular, the sheared and imino GA mismatches produce a narrowing and widening of the backbone, respectively. The results show that substitutions of Watson-Crick base pairs can have dramatic effects on the three-dimensional structures of adjacent non-Watson-Crick paired regions; i.e., the structure depends on sequence context. Thus compensating substitutions in site-directed mutagenesis experiments may not always restore biological activities.
The three-dimensional solution structure of the RNA self-complementary duplex [sequence: see text] was derived from two-dimensional NMR and the iterative relaxation matrix approach. Each GA mismatch forms two hydrogen bonds: A-NH6 to G-O6 and A-N1 to G-NH1 (imino). This is the first three-dimensional RNA structure with imino hydrogen-bonded tandem GA mismatches. This GA structure is totally different from the sheared tandem GA structure in [sequence: see text] which also has two hydrogen bonds: A-N7 to G-NH2 and A-NH6 to G-N3 [SantaLucia, J., Jr., &amp; Turner, D. H. (1993) Biochemistry 32, 12612-12623]. In particular, the sheared and imino GA mismatches produce a narrowing and widening of the backbone, respectively. The results show that substitutions of Watson-Crick base pairs can have dramatic effects on the three-dimensional structures of adjacent non-Watson-Crick paired regions; i.e., the structure depends on sequence context. Thus compensating substitutions in site-directed mutagenesis experiments may not always restore biological activities.
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==About this Structure==
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Solution structure of (rGCGGACGC)2 by two-dimensional NMR and the iterative relaxation matrix approach.,Wu M, Turner DH Biochemistry. 1996 Jul 30;35(30):9677-89. PMID:8703939<ref>PMID:8703939</ref>
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1MWG is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/ ]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1MWG OCA].
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==Reference==
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Solution structure of (rGCGGACGC)2 by two-dimensional NMR and the iterative relaxation matrix approach., Wu M, Turner DH, Biochemistry. 1996 Jul 30;35(30):9677-89. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/8703939 8703939]
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[[Category: Protein complex]]
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[[Category: Santalucia, J.]]
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[[Category: Turner, D H.]]
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[[Category: Wu, M.]]
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[[Category: duplex]]
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[[Category: g:a mismatch]]
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[[Category: ribonucleic acid]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 22:22:11 2008''
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 1mwg" style="background-color:#fffaf0;"></div>
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== References ==
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<references/>
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__TOC__
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</StructureSection>
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[[Category: Large Structures]]
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[[Category: Santalucia J]]
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[[Category: Turner DH]]
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[[Category: Wu M]]

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STRUCTURE OF RIBONUCLEIC ACID, NMR, MINIMIZED AVERAGE STRUCTURE

PDB ID 1mwg

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