3klf

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[[Image:3klf.png|left|200px]]
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==Crystal structure of wild-type HIV-1 Reverse Transcriptase crosslinked to a DSDNA with a bound excision product, AZTPPPPA==
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<StructureSection load='3klf' size='340' side='right' caption='[[3klf]], [[Resolution|resolution]] 3.15&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[3klf]] is a 16 chain structure with sequence from [http://en.wikipedia.org/wiki/Human_immunodeficiency_virus_1 Human immunodeficiency virus 1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3KLF OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3KLF FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=ZP4:[[[[(2R,3S,4R,5R)-5-(6-AMINOPURIN-9-YL)-3,4-DIHYDROXY-OXOLAN-2-YL]METHOXY-HYDROXY-PHOSPHORYL]OXY-HYDROXY-PHOSPHORYL]OXY-HYDROXY-PHOSPHORYL]+[(2S,3S,5R)-3-AZIDO-5-(5-METHYL-2,4-DIOXO-PYRIMIDIN-1-YL)OXOLAN-2-YL]METHYL+HYDROGEN+PHOSPHATE'>ZP4</scene></td></tr>
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<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=2DA:2,3-DIDEOXYADENOSINE-5-MONOPHOSPHATE'>2DA</scene>, <scene name='pdbligand=MRG:N2-(3-MERCAPTOPROPYL)-2-DEOXYGUANOSINE-5-MONOPHOSPHATE'>MRG</scene></td></tr>
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<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3kle|3kle]], [[3klg|3klg]], [[3klh|3klh]], [[3kli|3kli]]</td></tr>
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">gag-pol ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=11676 Human immunodeficiency virus 1])</td></tr>
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<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=3klf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3klf OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3klf RCSB], [http://www.ebi.ac.uk/pdbsum/3klf PDBsum]</span></td></tr>
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</table>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/kl/3klf_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Human immunodeficiency virus (HIV-1) develops resistance to 3'-azido-2',3'-deoxythymidine (AZT, zidovudine) by acquiring mutations in reverse transcriptase that enhance the ATP-mediated excision of AZT monophosphate from the 3' end of the primer. The excision reaction occurs at the dNTP-binding site, uses ATP as a pyrophosphate donor, unblocks the primer terminus and allows reverse transcriptase to continue viral DNA synthesis. The excision product is AZT adenosine dinucleoside tetraphosphate (AZTppppA). We determined five crystal structures: wild-type reverse transcriptase-double-stranded DNA (RT-dsDNA)-AZTppppA; AZT-resistant (AZTr; M41L D67N K70R T215Y K219Q) RT-dsDNA-AZTppppA; AZTr RT-dsDNA terminated with AZT at dNTP- and primer-binding sites; and AZTr apo reverse transcriptase. The AMP part of AZTppppA bound differently to wild-type and AZTr reverse transcriptases, whereas the AZT triphosphate part bound the two enzymes similarly. Thus, the resistance mutations create a high-affinity ATP-binding site. The structure of the site provides an opportunity to design inhibitors of AZT-monophosphate excision.
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{{STRUCTURE_3klf| PDB=3klf | SCENE= }}
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Structural basis of HIV-1 resistance to AZT by excision.,Tu X, Das K, Han Q, Bauman JD, Clark AD Jr, Hou X, Frenkel YV, Gaffney BL, Jones RA, Boyer PL, Hughes SH, Sarafianos SG, Arnold E Nat Struct Mol Biol. 2010 Oct;17(10):1202-9. Epub 2010 Sep 19. PMID:20852643<ref>PMID:20852643</ref>
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===Crystal structure of wild-type HIV-1 Reverse Transcriptase crosslinked to a DSDNA with a bound excision product, AZTPPPPA===
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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{{ABSTRACT_PUBMED_20852643}}
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==About this Structure==
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[[3klf]] is a 16 chain structure with sequence from [http://en.wikipedia.org/wiki/Human_immunodeficiency_virus_1 Human immunodeficiency virus 1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3KLF OCA].
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==See Also==
==See Also==
*[[Reverse transcriptase|Reverse transcriptase]]
*[[Reverse transcriptase|Reverse transcriptase]]
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== References ==
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==Reference==
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<references/>
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<ref group="xtra">PMID:020852643</ref><references group="xtra"/>
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__TOC__
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</StructureSection>
[[Category: Human immunodeficiency virus 1]]
[[Category: Human immunodeficiency virus 1]]
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[[Category: Arnold, E.]]
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[[Category: Arnold, E]]
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[[Category: Das, K.]]
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[[Category: Das, K]]
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[[Category: Sarafianos, S G.]]
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[[Category: Sarafianos, S G]]
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[[Category: Tu, X.]]
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[[Category: Tu, X]]
[[Category: Aid]]
[[Category: Aid]]
[[Category: Azt]]
[[Category: Azt]]

Revision as of 09:54, 9 December 2014

Crystal structure of wild-type HIV-1 Reverse Transcriptase crosslinked to a DSDNA with a bound excision product, AZTPPPPA

3klf, resolution 3.15Å

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