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==SOLUTION STRUCTURE OF HIV-1 REV PEPTIDE-RNA APTAMER COMPLEX==
The line below this paragraph, containing "STRUCTURE_484d", creates the "Structure Box" on the page.
<StructureSection load='484d' size='340' side='right'caption='[[484d]]' scene=''>
You may change the PDB parameter (which sets the PDB file loaded into the applet)  
== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[484d]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Human_immunodeficiency_virus_1 Human immunodeficiency virus 1]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=484D OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=484D FirstGlance]. <br>
or leave the SCENE parameter empty for the default display.
</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='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=484d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=484d OCA], [https://pdbe.org/484d PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=484d RCSB], [https://www.ebi.ac.uk/pdbsum/484d PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=484d ProSAT]</span></td></tr>
{{STRUCTURE_484d|  PDB=484d  |  SCENE=  }}
</table>
 
== Function ==
'''SOLUTION STRUCTURE OF HIV-1 REV PEPTIDE-RNA APTAMER COMPLEX'''
[https://www.uniprot.org/uniprot/Q79994_9HIV1 Q79994_9HIV1] Escorts unspliced or incompletely spliced viral pre-mRNAs (late transcripts) out of the nucleus of infected cells. These pre-mRNAs carry a recognition sequence called Rev responsive element (RRE) located in the env gene, that is not present in fully spliced viral mRNAs (early transcripts). This function is essential since most viral proteins are translated from unspliced or partially spliced pre-mRNAs which cannot exit the nucleus by the pathway used by fully processed cellular mRNAs.[RuleBase:RU364044]
 
<div style="background-color:#fffaf0;">
 
== Publication Abstract from PubMed ==
==Overview==
BACKGROUND: The biological function of several viral and bacteriophage proteins, and their arginine-rich subdomains, involves RNA-mediated interactions. It has been shown recently that bound peptides adopt either beta-hairpin or alpha-helical conformations in viral and phage peptide-RNA complexes. We have compared the structures of the arginine-rich peptide domain of HIV-1 Rev bound to two RNA aptamers to determine whether RNA architecture can dictate the conformations of a bound peptide. RESULTS: The core-binding segment of the HIV-1 Rev peptide class II RNA aptamer complex spans the two-base bulge and hairpin loop of the bound RNA and the carboxy-terminal segment of the bound peptide. The bound peptide is anchored in place by backbone and sidechain intermolecular hydrogen bonding and van der Waals stacking interactions. One of the bulge bases participates in U*(A*U) base triple formation, whereas the other is looped out and flaps over the bound peptide in the complex. The seven-residue hairpin loop is closed by a sheared G*A mismatch pair with several pyrimidines looped out of the hairpin fold. CONCLUSIONS: Our structural studies establish that RNA architecture dictates whether the same HIV-1 Rev peptide folds into an extended or alpha-helical conformation on complex formation. Arginine-rich peptides can therefore adapt distinct secondary folds to complement the tertiary folds of their RNA targets. This contrasts with protein-RNA complexes in which elements of RNA secondary structure adapt to fit within the tertiary folds of their protein targets.
BACKGROUND: The biological function of several viral and bacteriophage proteins, and their arginine-rich subdomains, involves RNA-mediated interactions. It has been shown recently that bound peptides adopt either beta-hairpin or alpha-helical conformations in viral and phage peptide-RNA complexes. We have compared the structures of the arginine-rich peptide domain of HIV-1 Rev bound to two RNA aptamers to determine whether RNA architecture can dictate the conformations of a bound peptide. RESULTS: The core-binding segment of the HIV-1 Rev peptide class II RNA aptamer complex spans the two-base bulge and hairpin loop of the bound RNA and the carboxy-terminal segment of the bound peptide. The bound peptide is anchored in place by backbone and sidechain intermolecular hydrogen bonding and van der Waals stacking interactions. One of the bulge bases participates in U*(A*U) base triple formation, whereas the other is looped out and flaps over the bound peptide in the complex. The seven-residue hairpin loop is closed by a sheared G*A mismatch pair with several pyrimidines looped out of the hairpin fold. CONCLUSIONS: Our structural studies establish that RNA architecture dictates whether the same HIV-1 Rev peptide folds into an extended or alpha-helical conformation on complex formation. Arginine-rich peptides can therefore adapt distinct secondary folds to complement the tertiary folds of their RNA targets. This contrasts with protein-RNA complexes in which elements of RNA secondary structure adapt to fit within the tertiary folds of their protein targets.


==About this Structure==
RNA architecture dictates the conformations of a bound peptide.,Ye X, Gorin A, Frederick R, Hu W, Majumdar A, Xu W, McLendon G, Ellington A, Patel DJ Chem Biol. 1999 Sep;6(9):657-69. PMID:10467126<ref>PMID:10467126</ref>
484D is a [[Single protein]] structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=484D OCA].


==Reference==
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
RNA architecture dictates the conformations of a bound peptide., Ye X, Gorin A, Frederick R, Hu W, Majumdar A, Xu W, McLendon G, Ellington A, Patel DJ, Chem Biol. 1999 Sep;6(9):657-69. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/10467126 10467126]
</div>
[[Category: Single protein]]
<div class="pdbe-citations 484d" style="background-color:#fffaf0;"></div>
[[Category: Ellington, A.]]
== References ==
[[Category: Frederick, R.]]
<references/>
[[Category: Gorin, A A.]]
__TOC__
[[Category: Hu, W.]]
</StructureSection>
[[Category: Majumdar, A.]]
[[Category: Human immunodeficiency virus 1]]
[[Category: Mclendon, G.]]
[[Category: Large Structures]]
[[Category: Patel, D J.]]
[[Category: Ellington A]]
[[Category: Xu, W.]]
[[Category: Frederick R]]
[[Category: Ye, X.]]
[[Category: Gorin AA]]
[[Category: Adaptive-binding]]
[[Category: Hu W]]
[[Category: Bound peptide secondary structure]]
[[Category: Majumdar A]]
[[Category: Hiv-1 rev peptide]]
[[Category: Mclendon G]]
[[Category: Peptide- binding rna]]
[[Category: Patel DJ]]
[[Category: Rna aptamer]]
[[Category: Xu W]]
[[Category: Tertiary architecture]]
[[Category: Ye X]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May  4 22:19:57 2008''

Latest revision as of 15:56, 20 December 2023

SOLUTION STRUCTURE OF HIV-1 REV PEPTIDE-RNA APTAMER COMPLEXSOLUTION STRUCTURE OF HIV-1 REV PEPTIDE-RNA APTAMER COMPLEX

Structural highlights

484d is a 2 chain structure with sequence from Human immunodeficiency virus 1. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:Solution NMR
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

Q79994_9HIV1 Escorts unspliced or incompletely spliced viral pre-mRNAs (late transcripts) out of the nucleus of infected cells. These pre-mRNAs carry a recognition sequence called Rev responsive element (RRE) located in the env gene, that is not present in fully spliced viral mRNAs (early transcripts). This function is essential since most viral proteins are translated from unspliced or partially spliced pre-mRNAs which cannot exit the nucleus by the pathway used by fully processed cellular mRNAs.[RuleBase:RU364044]

Publication Abstract from PubMed

BACKGROUND: The biological function of several viral and bacteriophage proteins, and their arginine-rich subdomains, involves RNA-mediated interactions. It has been shown recently that bound peptides adopt either beta-hairpin or alpha-helical conformations in viral and phage peptide-RNA complexes. We have compared the structures of the arginine-rich peptide domain of HIV-1 Rev bound to two RNA aptamers to determine whether RNA architecture can dictate the conformations of a bound peptide. RESULTS: The core-binding segment of the HIV-1 Rev peptide class II RNA aptamer complex spans the two-base bulge and hairpin loop of the bound RNA and the carboxy-terminal segment of the bound peptide. The bound peptide is anchored in place by backbone and sidechain intermolecular hydrogen bonding and van der Waals stacking interactions. One of the bulge bases participates in U*(A*U) base triple formation, whereas the other is looped out and flaps over the bound peptide in the complex. The seven-residue hairpin loop is closed by a sheared G*A mismatch pair with several pyrimidines looped out of the hairpin fold. CONCLUSIONS: Our structural studies establish that RNA architecture dictates whether the same HIV-1 Rev peptide folds into an extended or alpha-helical conformation on complex formation. Arginine-rich peptides can therefore adapt distinct secondary folds to complement the tertiary folds of their RNA targets. This contrasts with protein-RNA complexes in which elements of RNA secondary structure adapt to fit within the tertiary folds of their protein targets.

RNA architecture dictates the conformations of a bound peptide.,Ye X, Gorin A, Frederick R, Hu W, Majumdar A, Xu W, McLendon G, Ellington A, Patel DJ Chem Biol. 1999 Sep;6(9):657-69. PMID:10467126[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

  1. Ye X, Gorin A, Frederick R, Hu W, Majumdar A, Xu W, McLendon G, Ellington A, Patel DJ. RNA architecture dictates the conformations of a bound peptide. Chem Biol. 1999 Sep;6(9):657-69. PMID:10467126
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