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1e2i
From Proteopedia
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| - | [[Image:1e2i.gif|left|200px]] | ||
| - | + | ==The nucleoside binding site of Herpes simplex type 1 thymidine kinase analyzed by X-ray crystallography== | |
| - | + | <StructureSection load='1e2i' size='340' side='right'caption='[[1e2i]], [[Resolution|resolution]] 1.90Å' scene=''> | |
| - | + | == Structural highlights == | |
| - | | | + | <table><tr><td colspan='2'>[[1e2i]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Human_alphaherpesvirus_1_strain_17 Human alphaherpesvirus 1 strain 17]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1E2I OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1E2I FirstGlance]. <br> |
| - | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.9Å</td></tr> | |
| - | | | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=APS:9-HYDROXYPROPYLADENINE,+S-ISOMER'>APS</scene>, <scene name='pdbligand=ARP:9-HYDROXYPROPYLADENINE,+R-ISOMER'>ARP</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> |
| - | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1e2i FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1e2i OCA], [https://pdbe.org/1e2i PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1e2i RCSB], [https://www.ebi.ac.uk/pdbsum/1e2i PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1e2i ProSAT]</span></td></tr> | |
| - | + | </table> | |
| - | + | == Function == | |
| - | + | [https://www.uniprot.org/uniprot/KITH_HHV11 KITH_HHV11] In latent infection, may allow the virus to be reactivated and to grow in cells lacking a high concentration of phosphorylated nucleic acid precursors, such as nerve cells that do not replicate their genome (By similarity). | |
| - | + | == Evolutionary Conservation == | |
| - | == | + | [[Image:Consurf_key_small.gif|200px|right]] |
| + | Check<jmol> | ||
| + | <jmolCheckbox> | ||
| + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/e2/1e2i_consurf.spt"</scriptWhenChecked> | ||
| + | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | ||
| + | <text>to colour the structure by Evolutionary Conservation</text> | ||
| + | </jmolCheckbox> | ||
| + | </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=1e2i ConSurf]. | ||
| + | <div style="clear:both"></div> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
The crystal structures of the full-length Herpes simplex virus type 1 thymidine kinase in its unligated form and in a complex with an adenine analogue have been determined at 1.9 A resolution. The unligated enzyme contains four water molecules in the thymidine pocket and reveals a small induced fit on substrate binding. The structure of the ligated enzyme shows for the first time a bound adenine analogue after numerous complexes with thymine and guanine analogues have been reported. The adenine analogue constitutes a new lead compound for enzyme-prodrug gene therapy. In addition, the structure of mutant Q125N modifying the binding site of the natural substrate thymidine in complex with this substrate has been established at 2.5 A resolution. It reveals that neither the binding mode of thymidine nor the polypeptide backbone conformation is altered, except that the two major hydrogen bonds to thymidine are replaced by a single water-mediated hydrogen bond, which improves the relative acceptance of the prodrugs aciclovir and ganciclovir compared with the natural substrate. Accordingly, the mutant structure represents a first step toward improving the virus-directed enzyme-prodrug gene therapy by enzyme engineering. | The crystal structures of the full-length Herpes simplex virus type 1 thymidine kinase in its unligated form and in a complex with an adenine analogue have been determined at 1.9 A resolution. The unligated enzyme contains four water molecules in the thymidine pocket and reveals a small induced fit on substrate binding. The structure of the ligated enzyme shows for the first time a bound adenine analogue after numerous complexes with thymine and guanine analogues have been reported. The adenine analogue constitutes a new lead compound for enzyme-prodrug gene therapy. In addition, the structure of mutant Q125N modifying the binding site of the natural substrate thymidine in complex with this substrate has been established at 2.5 A resolution. It reveals that neither the binding mode of thymidine nor the polypeptide backbone conformation is altered, except that the two major hydrogen bonds to thymidine are replaced by a single water-mediated hydrogen bond, which improves the relative acceptance of the prodrugs aciclovir and ganciclovir compared with the natural substrate. Accordingly, the mutant structure represents a first step toward improving the virus-directed enzyme-prodrug gene therapy by enzyme engineering. | ||
| - | + | Nucleoside binding site of herpes simplex type 1 thymidine kinase analyzed by X-ray crystallography.,Vogt J, Perozzo R, Pautsch A, Prota A, Schelling P, Pilger B, Folkers G, Scapozza L, Schulz GE Proteins. 2000 Dec 1;41(4):545-53. PMID:11056041<ref>PMID:11056041</ref> | |
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| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | + | </div> | |
| - | + | <div class="pdbe-citations 1e2i" style="background-color:#fffaf0;"></div> | |
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| - | + | ==See Also== | |
| + | *[[Thymidine kinase 3D structures|Thymidine kinase 3D structures]] | ||
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Human alphaherpesvirus 1 strain 17]] | ||
| + | [[Category: Large Structures]] | ||
| + | [[Category: Scapozza L]] | ||
| + | [[Category: Schulz GE]] | ||
| + | [[Category: Vogt J]] | ||
Current revision
The nucleoside binding site of Herpes simplex type 1 thymidine kinase analyzed by X-ray crystallography
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