2fcx

<table><tr><td colspan='2'>[[2fcx]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2FCX OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2FCX FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=XXX:(2R,3S,4R,5R,6R)-6-((1R,2R,3S,4R,6S)-4,6-DIAMINO-2,3-DIHYDROXYCYCLOHEXYLOXY)-5-AMINO-2-(AMINOMETHYL)-TETRAHYDRO-2H-PYRAN-3,4-DIOL'>XXX</scene></td></tr>

<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1xp7|1xp7]], [[1y3s|1y3s]], [[2fcy|2fcy]], [[2fcz|2fcz]], [[2fd0|2fd0]]</td></tr>

<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2fcx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2fcx OCA], [http://pdbe.org/2fcx PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2fcx RCSB], [http://www.ebi.ac.uk/pdbsum/2fcx PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2fcx ProSAT]</span></td></tr>

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== Publication Abstract from PubMed ==

The kissing-loop complex that initiates dimerization of genomic RNA is crucial for Human Immunodeficiency Virus Type 1 (HIV-1) replication. We showed that owing to its strong similitude with the bacterial ribosomal A site it can be targeted by aminoglycosides. Here, we present its crystal structure in complex with neamine, ribostamycin, neomycin and lividomycin. These structures explain the specificity for 4,5-disubstituted 2-deoxystreptamine (DOS) derivatives and for subtype A and subtype F kissing-loop complexes, and provide a strong basis for rational drug design. As a consequence of the different topologies of the kissing-loop complex and the A site, these aminoglycosides establish more contacts with HIV-1 RNA than with 16S RNA. Together with biochemical experiments, they showed that while rings I, II and III confer binding specificity, rings IV and V are important for affinity. Binding of neomycin, paromomycin and lividomycin strongly stabilized the kissing-loop complex by bridging the two HIV-1 RNA molecules. Furthermore, in situ footprinting showed that the dimerization initiation site (DIS) of HIV-1 genomic RNA could be targeted by these aminoglycosides in infected cells and virions, demonstrating its accessibility.

Targeting the dimerization initiation site of HIV-1 RNA with aminoglycosides: from crystal to cell.,Ennifar E, Paillart JC, Bodlenner A, Walter P, Weibel JM, Aubertin AM, Pale P, Dumas P, Marquet R Nucleic Acids Res. 2006 May 5;34(8):2328-39. Print 2006. PMID:16679451<ref>PMID:16679451</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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<div class="pdbe-citations 2fcx" style="background-color:#fffaf0;"></div>

== References ==

<references/>

[[Category: Dumas, P]]

[[Category: Ennifar, E]]

[[Category: Marquet, R]]

[[Category: Paillart, J C]]

[[Category: Rna]]