1a60

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{{STRUCTURE_1a60| PDB=1a60 | SCENE= }}
{{STRUCTURE_1a60| PDB=1a60 | SCENE= }}
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'''NMR STRUCTURE OF A CLASSICAL PSEUDOKNOT: INTERPLAY OF SINGLE-AND DOUBLE-STRANDED RNA, 24 STRUCTURES'''
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===NMR STRUCTURE OF A CLASSICAL PSEUDOKNOT: INTERPLAY OF SINGLE-AND DOUBLE-STRANDED RNA, 24 STRUCTURES===
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==Overview==
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Pseudoknot formation folds the 3' ends of many plant viral genomic RNAs into structures that resemble transfer RNA in global folding and in their reactivity to transfer RNA-specific proteins. The solution structure of the pseudoknotted T arm and acceptor arm of the transfer RNA-like structure of turnip yellow mosaic virus (TYMV) was determined by nuclear magnetic resonance (NMR) spectroscopy. The molecule is stabilized by the hairpin formed by the 5' end of the RNA, and by the intricate interactions related to the loops of the pseudoknot. Loop 1 spans the major groove of the helix with only two of its four nucleotides. Loop 2, which crosses the minor groove, interacts closely with its opposing helix, in particular through hydrogen bonds with a highly conserved adenine. The structure resulting from this interaction between the minor groove and single-stranded RNA at helical junctions displays internal mobility, which may be a general feature of RNA pseudoknots that regulates their interaction with proteins or other RNA molecules.
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The line below this paragraph, {{ABSTRACT_PUBMED_9545221}}, adds the Publication Abstract to the page
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(as it appears on PubMed at http://www.pubmed.gov), where 9545221 is the PubMed ID number.
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{{ABSTRACT_PUBMED_9545221}}
==About this Structure==
==About this Structure==
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Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1A60 OCA].
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Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1A60 OCA].
==Reference==
==Reference==
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[[Category: Rna]]
[[Category: Rna]]
[[Category: Tymv]]
[[Category: Tymv]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 09:51:49 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 16:12:32 2008''

Revision as of 13:12, 30 June 2008

Image:1a60.png

Template:STRUCTURE 1a60

NMR STRUCTURE OF A CLASSICAL PSEUDOKNOT: INTERPLAY OF SINGLE-AND DOUBLE-STRANDED RNA, 24 STRUCTURES

Template:ABSTRACT PUBMED 9545221

About this Structure

Full experimental information is available from OCA.

Reference

NMR structure of a classical pseudoknot: interplay of single- and double-stranded RNA., Kolk MH, van der Graaf M, Wijmenga SS, Pleij CW, Heus HA, Hilbers CW, Science. 1998 Apr 17;280(5362):434-8. PMID:9545221

Page seeded by OCA on Mon Jun 30 16:12:32 2008

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