1ho6

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[[Image:1ho6.png|left|200px]]
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==CHIMERIC ARABINONUCLEIC ACID (ANA) HAIRPIN WITH ANA/RNA HYBRID STEM==
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<StructureSection load='1ho6' size='340' side='right' caption='[[1ho6]], [[NMR_Ensembles_of_Models | 10 NMR models]]' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1ho6]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1HO6 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1HO6 FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=CAR:CYTOSINE+ARABINOSE-5-PHOSPHATE'>CAR</scene>, <scene name='pdbligand=GAO:GUANINE+ARABINOSE-5-PHOSPHATE'>GAO</scene>, <scene name='pdbligand=UAR:URACIL+ARABINOSE-5-PHOSPHATE'>UAR</scene></td></tr>
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<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1fc8|1fc8]], [[1hoq|1hoq]]</td></tr>
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<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1ho6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ho6 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1ho6 RCSB], [http://www.ebi.ac.uk/pdbsum/1ho6 PDBsum]</span></td></tr>
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<table>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Hybrids of RNA and arabinonucleic acid (ANA) as well as the 2'-fluoro-ANA analog (2'F-ANA) were recently shown to be substrates of the enzyme RNase H. Although RNase H binds to double-stranded RNA, no cleavage occurs with such duplexes. Therefore, knowledge of the structure of ANA/RNA hybrids may prove helpful in the design of future antisense oligonucleotide analogs. In this study, we have determined the NMR solution structures of ANA/RNA and DNA/RNA hairpin duplexes and compared them to the recently published structure of a 2'F-ANA/RNA hairpin duplex. We demonstrate here that the sugars of RNA nucleotides of the ANA/RNA hairpin stem adopt the C3'-endo (north, A-form) conformation, whereas those of the ANA strand adopt a 'rigid' O4'-endo (east) sugar pucker. The DNA strand of the DNA/RNA hairpin stem is flexible, but the average DNA/RNA hairpin structural parameters are close to the ANA/RNA and 2'F-ANA/RNA hairpin parameters. The minor groove width of ANA/RNA, 2'F-ANA/RNA and DNA/RNA helices is 9.0 +/- 0.5 A, a value that is intermediate between that of A- and B-form duplexes. These results rationalize the ability of ANA/RNA and 2'F-ANA/RNA hybrids to elicit RNase H activity.
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{{STRUCTURE_1ho6| PDB=1ho6 | SCENE= }}
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Solution structure of an arabinonucleic acid (ANA)/RNA duplex in a chimeric hairpin: comparison with 2'-fluoro-ANA/RNA and DNA/RNA hybrids.,Denisov AY, Noronha AM, Wilds CJ, Trempe JF, Pon RT, Gehring K, Damha MJ Nucleic Acids Res. 2001 Nov 1;29(21):4284-93. PMID:11691916<ref>PMID:11691916</ref>
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===CHIMERIC ARABINONUCLEIC ACID (ANA) HAIRPIN WITH ANA/RNA HYBRID STEM===
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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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{{ABSTRACT_PUBMED_11691916}}
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== References ==
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<references/>
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==About this Structure==
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__TOC__
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[[1ho6]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1HO6 OCA].
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</StructureSection>
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==Reference==
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<ref group="xtra">PMID:011691916</ref><references group="xtra"/>
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[[Category: Denisov, A Y.]]
[[Category: Denisov, A Y.]]
[[Category: Gehring, K.]]
[[Category: Gehring, K.]]

Revision as of 05:39, 8 June 2014

CHIMERIC ARABINONUCLEIC ACID (ANA) HAIRPIN WITH ANA/RNA HYBRID STEM

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