1lwx

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[[Image:1lwx.jpg|left|200px]]
 
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==AZT DIPHOSPHATE BINDING TO NUCLEOSIDE DIPHOSPHATE KINASE==
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The line below this paragraph, containing "STRUCTURE_1lwx", creates the "Structure Box" on the page.
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<StructureSection load='1lwx' size='340' side='right'caption='[[1lwx]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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== Structural highlights ==
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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<table><tr><td colspan='2'>[[1lwx]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Dictyostelium_discoideum Dictyostelium discoideum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1LWX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1LWX FirstGlance]. <br>
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or leave the SCENE parameter empty for the default display.
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.3&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=AZD:3-AZIDO-3-DEOXYTHYMIDINE-5-DIPHOSPHATE'>AZD</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
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{{STRUCTURE_1lwx| PDB=1lwx | SCENE= }}
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1lwx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1lwx OCA], [https://pdbe.org/1lwx PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1lwx RCSB], [https://www.ebi.ac.uk/pdbsum/1lwx PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1lwx ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/NDKC_DICDI NDKC_DICDI]
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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/lw/1lwx_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/main_output.php?pdb_ID=1lwx ConSurf].
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<div style="clear:both"></div>
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'''AZT DIPHOSPHATE BINDING TO NUCLEOSIDE DIPHOSPHATE KINASE'''
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==See Also==
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*[[Nucleoside diphosphate kinase 3D structures|Nucleoside diphosphate kinase 3D structures]]
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__TOC__
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==Overview==
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</StructureSection>
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To be effective as antiviral agent, AZT (3'-azido-3'-deoxythymidine) must be converted to a triphosphate derivative by cellular kinases. The conversion is inefficient and, to understand why AZT diphosphate is a poor substrate of nucleoside diphosphate (NDP) kinase, we determined a 2.3-A x-ray structure of a complex with the N119A point mutant of Dictyostelium NDP kinase. It shows that the analog binds at the same site and, except for the sugar ring pucker which is different, binds in the same way as the natural substrate thymidine diphosphate. However, the azido group that replaces the 3'OH of the deoxyribose in AZT displaces a lysine side chain involved in catalysis. Moreover, it is unable to make an internal hydrogen bond to the oxygen bridging the beta- and gamma-phosphate, which plays an important part in phosphate transfer.
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==About this Structure==
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1LWX is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Dictyostelium_discoideum Dictyostelium discoideum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1LWX OCA].
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==Reference==
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X-ray analysis of azido-thymidine diphosphate binding to nucleoside diphosphate kinase., Xu Y, Sellam O, Morera S, Sarfati S, Biondi R, Veron M, Janin J, Proc Natl Acad Sci U S A. 1997 Jul 8;94(14):7162-5. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/9207061 9207061]
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[[Category: Dictyostelium discoideum]]
[[Category: Dictyostelium discoideum]]
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[[Category: Nucleoside-diphosphate kinase]]
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[[Category: Large Structures]]
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[[Category: Single protein]]
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[[Category: Janin J]]
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[[Category: Janin, J.]]
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[[Category: Xu Y]]
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[[Category: Xu, Y.]]
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[[Category: Antiviral agent]]
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[[Category: Azidothymidine]]
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[[Category: Phosphotransferase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 00:23:04 2008''
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AZT DIPHOSPHATE BINDING TO NUCLEOSIDE DIPHOSPHATE KINASE

PDB ID 1lwx

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