View source for 3nxn


==X-ray structure of ester chemical analogue 'covalent dimer' [Ile50,O-Ile50']HIV-1 protease complexed with KVS-1 inhibitor==
<StructureSection load='3nxn' size='340' side='right'caption='[[3nxn]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3nxn]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3NXN OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3NXN FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=KVS:N~2~-[(2R,5S)-5-({(2S,3S)-2-[(N-ACETYL-L-THREONYL)AMINO]-3-METHYLPENT-4-ENOYL}AMINO)-2-BUTYL-4,4-DIHYDROXYNONANOYL]-L-GLUTAMINYL-L-ARGININAMIDE'>KVS</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=ABA:ALPHA-AMINOBUTYRIC+ACID'>ABA</scene>, <scene name='pdbligand=NLE:NORLEUCINE'>NLE</scene>, <scene name='pdbligand=OIL:(2S,3S)-2-HYDROXY-3-METHYLPENTANOIC+ACID'>OIL</scene>, <scene name='pdbligand=YCM:S-(2-AMINO-2-OXOETHYL)-L-CYSTEINE'>YCM</scene></td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3nwx|3nwx]], [[3nwq|3nwq]], [[3nxe|3nxe]], [[3hau|3hau]], [[3hdk|3hdk]], [[3hlo|3hlo]], [[3nyg|3nyg]]</td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/HIV-1_retropepsin HIV-1 retropepsin], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.23.16 3.4.23.16] </span></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=3nxn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3nxn OCA], [http://pdbe.org/3nxn PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3nxn RCSB], [http://www.ebi.ac.uk/pdbsum/3nxn PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3nxn ProSAT]</span></td></tr>
</table>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
We have used chemical protein synthesis and advanced physical methods to probe dynamics-function correlations for the HIV-1 protease, an enzyme that has received considerable attention as a target for the treatment of AIDS. Chemical synthesis was used to prepare a series of unique analogues of the HIV-1 protease in which the flexibility of the "flap" structures (residues 37-61 in each monomer of the homodimeric protein molecule) was systematically varied. These analogue enzymes were further studied by X-ray crystallography, NMR relaxation, and pulse-EPR methods, in conjunction with molecular dynamics simulations. We show that conformational isomerization in the flaps is correlated with structural reorganization of residues in the active site, and that it is preorganization of the active site that is a rate-limiting factor in catalysis.

Protein conformational dynamics in the mechanism of HIV-1 protease catalysis.,Torbeev VY, Raghuraman H, Hamelberg D, Tonelli M, Westler WM, Perozo E, Kent SB Proc Natl Acad Sci U S A. 2011 Dec 27;108(52):20982-7. Epub 2011 Dec 8. PMID:22158985<ref>PMID:22158985</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 3nxn" style="background-color:#fffaf0;"></div>

==See Also==
*[[Immunodeficiency virus protease 3D structures|Immunodeficiency virus protease 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: HIV-1 retropepsin]]
[[Category: Large Structures]]
[[Category: Kent, S B.H]]
[[Category: Torbeev, V Y]]
[[Category: Beta-barrel]]
[[Category: Hydrolase-hydrolase inhibitor complex]]