1rt4

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[[Image:1rt4.gif|left|200px]]
[[Image:1rt4.gif|left|200px]]
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{{Structure
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<!--
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|PDB= 1rt4 |SIZE=350|CAPTION= <scene name='initialview01'>1rt4</scene>, resolution 2.9&Aring;
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The line below this paragraph, containing "STRUCTURE_1rt4", creates the "Structure Box" on the page.
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|SITE=
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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|LIGAND= <scene name='pdbligand=CSD:3-SULFINOALANINE'>CSD</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene>, <scene name='pdbligand=UC1:2-METHYL-FURAN-3-CARBOTHIOIC+ACID+[4-CHLORO-3-(3-METHYL-BUT-2-ENYLOXY)-PHENYL]-AMIDE'>UC1</scene>
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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|ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/RNA-directed_DNA_polymerase RNA-directed DNA polymerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.7.49 2.7.7.49] </span>
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or leave the SCENE parameter empty for the default display.
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|GENE= POL ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id= Human immunodeficiency virus type 1 (isolate HXB2)])
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-->
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|DOMAIN=
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{{STRUCTURE_1rt4| PDB=1rt4 | SCENE= }}
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|RELATEDENTRY=
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1rt4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1rt4 OCA], [http://www.ebi.ac.uk/pdbsum/1rt4 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1rt4 RCSB]</span>
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}}
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'''HIV-1 REVERSE TRANSCRIPTASE COMPLEXED WITH UC781'''
'''HIV-1 REVERSE TRANSCRIPTASE COMPLEXED WITH UC781'''
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==Reference==
==Reference==
Crystal structures of HIV-1 reverse transcriptase in complex with carboxanilide derivatives., Ren J, Esnouf RM, Hopkins AL, Warren J, Balzarini J, Stuart DI, Stammers DK, Biochemistry. 1998 Oct 13;37(41):14394-403. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/9772165 9772165]
Crystal structures of HIV-1 reverse transcriptase in complex with carboxanilide derivatives., Ren J, Esnouf RM, Hopkins AL, Warren J, Balzarini J, Stuart DI, Stammers DK, Biochemistry. 1998 Oct 13;37(41):14394-403. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/9772165 9772165]
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[[Category: Human immunodeficiency virus type 1 (isolate hxb2)]]
 
[[Category: Protein complex]]
[[Category: Protein complex]]
[[Category: RNA-directed DNA polymerase]]
[[Category: RNA-directed DNA polymerase]]
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[[Category: Stammers, D K.]]
[[Category: Stammers, D K.]]
[[Category: Stuart, D I.]]
[[Category: Stuart, D I.]]
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[[Category: aid]]
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[[Category: Aid]]
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[[Category: drug design]]
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[[Category: Drug design]]
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[[Category: hiv-1 reverse transcriptase]]
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[[Category: Hiv-1 reverse transcriptase]]
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[[Category: nonnucleoside inhibition]]
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[[Category: Nonnucleoside inhibition]]
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[[Category: nucleotidyltransferase]]
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[[Category: Nucleotidyltransferase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 07:52:23 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 23:32:34 2008''
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Revision as of 04:52, 3 May 2008

Image:1rt4.gif

Template:STRUCTURE 1rt4

HIV-1 REVERSE TRANSCRIPTASE COMPLEXED WITH UC781


Overview

The carboxanilides are nonnucleoside inhibitors (NNIs) of HIV-1 reverse transcriptase (RT), of potential clinical importance. The compounds differ in potency and in their retention of potency in the face of drug resistance mutations. Whereas UC-84, the prototype compound, only weakly inhibits many RTs bearing single point resistance mutations, inhibition by UC-781 is little affected. It has been proposed that UC-38 and UC-781 may form quaternary complexes with RT at a site other than the known binding pocket of other NNIs. X-ray crystal structures of four HIV-1 RT-carboxanilide complexes (UC-10, UC-38, UC-84, and UC-781) reported here reveal that all four inhibitors bind in the usual NNI site, forming binary 1:1 complexes with RT in the absence of substrates with the amide/thioamide bond in cis conformations. For all four complexes the anilide rings of the inhibitors overlap aromatic rings of many other NNIs bound to RT. In contrast, the second rings of UC-10, UC-84, and UC-781 do not bind in equivalent positions to those of other "two-ring" NNIs such as alpha-APA or HEPT derivatives. The binding modes most closely resemble that of the structurally dissimilar NNI, Cl-TIBO, with a common hydrogen bond between each carboxanilide NH- group and the main-chain carbonyl oxygen of Lys101. The binding modes differ slightly between the UC-10/UC-781 and UC-38/UC-84 pairs of compounds, apparently related to the shorter isopropylmethanoyl substituents of the anilide rings of UC-38/UC-84, which draws these rings closer to residues Tyr181 and Tyr188. This in turn explains the differences in the effect of mutated residues on the binding of these compounds.

About this Structure

1RT4 is a Protein complex structure of sequences from Human immunodeficiency virus type 1 (isolate hxb2). Full crystallographic information is available from OCA.

Reference

Crystal structures of HIV-1 reverse transcriptase in complex with carboxanilide derivatives., Ren J, Esnouf RM, Hopkins AL, Warren J, Balzarini J, Stuart DI, Stammers DK, Biochemistry. 1998 Oct 13;37(41):14394-403. PMID:9772165 Page seeded by OCA on Sat May 3 07:52:23 2008

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