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| | ==Plasmodium falciparum thymidylate kinase in complex with TMP and ADP== | | ==Plasmodium falciparum thymidylate kinase in complex with TMP and ADP== |
| - | <StructureSection load='2wwf' size='340' side='right' caption='[[2wwf]], [[Resolution|resolution]] 1.89Å' scene=''> | + | <StructureSection load='2wwf' size='340' side='right'caption='[[2wwf]], [[Resolution|resolution]] 1.89Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2wwf]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Plaf7 Plaf7]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2WWF OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2WWF FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2wwf]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Plasmodium_falciparum_3D7 Plasmodium falciparum 3D7]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2WWF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2WWF FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=TMP:THYMIDINE-5-PHOSPHATE'>TMP</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.89Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2wwh|2wwh]], [[2wwg|2wwg]], [[2wwi|2wwi]]</td></tr>
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=TMP:THYMIDINE-5-PHOSPHATE'>TMP</scene></td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/dTMP_kinase dTMP kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.4.9 2.7.4.9] </span></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=2wwf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2wwf OCA], [https://pdbe.org/2wwf PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2wwf RCSB], [https://www.ebi.ac.uk/pdbsum/2wwf PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2wwf ProSAT]</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=2wwf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2wwf OCA], [http://pdbe.org/2wwf PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2wwf RCSB], [http://www.ebi.ac.uk/pdbsum/2wwf PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2wwf ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | + | == Function == |
| | + | [https://www.uniprot.org/uniprot/KTHY_PLAF7 KTHY_PLAF7] Catalyzes the phosphorylation of thymidine monophosphate (dTMP) to thymidine diphosphate (dTDP), the immediate precursor for the DNA building block dTTP (PubMed:18477629, PubMed:19126267, PubMed:31934749, PubMed:20353400). Can also phosphorylate dGMP and to a lesser extent GMP, dUMP and dIMP (PubMed:18477629, PubMed:19126267, PubMed:31934749, PubMed:20353400). Can use either ATP or dATP as phosphate donors in presence of Mg(2+) (PubMed:18477629).<ref>PMID:18477629</ref> <ref>PMID:19126267</ref> <ref>PMID:20353400</ref> <ref>PMID:31934749</ref> |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Plaf7]] | + | [[Category: Large Structures]] |
| - | [[Category: DTMP kinase]] | + | [[Category: Plasmodium falciparum 3D7]] |
| - | [[Category: Brannigan, J A]] | + | [[Category: Brannigan JA]] |
| - | [[Category: Carrero-Lerida, J]] | + | [[Category: Carrero-Lerida J]] |
| - | [[Category: Fogg, M J]] | + | [[Category: Fogg MJ]] |
| - | [[Category: Gilbert, I H]] | + | [[Category: Gilbert IH]] |
| - | [[Category: Gonzalez-Pacanowska, D]] | + | [[Category: Gonzalez-Pacanowska D]] |
| - | [[Category: Ruiz-Perez, L M]] | + | [[Category: Ruiz-Perez LM]] |
| - | [[Category: Silva, A P.G]] | + | [[Category: Silva APG]] |
| - | [[Category: Whittingham, J L]] | + | [[Category: Whittingham JL]] |
| - | [[Category: Wilkinson, A J]] | + | [[Category: Wilkinson AJ]] |
| - | [[Category: Wilson, K S]] | + | [[Category: Wilson KS]] |
| - | [[Category: Kinase]]
| + | |
| - | [[Category: Malaria]]
| + | |
| - | [[Category: Transferase]]
| + | |
| Structural highlights
Function
KTHY_PLAF7 Catalyzes the phosphorylation of thymidine monophosphate (dTMP) to thymidine diphosphate (dTDP), the immediate precursor for the DNA building block dTTP (PubMed:18477629, PubMed:19126267, PubMed:31934749, PubMed:20353400). Can also phosphorylate dGMP and to a lesser extent GMP, dUMP and dIMP (PubMed:18477629, PubMed:19126267, PubMed:31934749, PubMed:20353400). Can use either ATP or dATP as phosphate donors in presence of Mg(2+) (PubMed:18477629).[1] [2] [3] [4]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
Plasmodium falciparum is the causative agent of malaria, a disease where new drug targets are required due to increasing resistance to current anti-malarials. TMPK (thymidylate kinase) is a good candidate as it is essential for the synthesis of dTTP, a critical precursor of DNA and has been much studied due to its role in prodrug activation and as a drug target. Type I TMPKs, such as the human enzyme, phosphorylate the substrate AZT (3'-azido-3'-deoxythymidine)-MP (monophosphate) inefficiently compared with type II TMPKs (e.g. Escherichia coli TMPK). In the present paper we report that eukaryotic PfTMPK (P. falciparum TMPK) presents sequence features of a type I enzyme yet the kinetic parameters for AZT-MP phosphorylation are similar to those of the highly efficient E. coli enzyme. Structural information shows that this is explained by a different juxtaposition of the P-loop and the azide of AZT-MP. Subsequent formation of the transition state requires no further movement of the PfTMPK P-loop, with no steric conflicts for the azide moiety, allowing efficient phosphate transfer. Likewise, we present results that confirm the ability of the enzyme to uniquely accept dGMP as a substrate and shed light on the basis for its wider substrate specificity. Information resulting from two ternary complexes (dTMP-ADP and AZT-MP-ADP) and a binary complex with the transition state analogue AP5dT [P1-(5'-adenosyl)-P5-(5'-thymidyl) pentaphosphate] all reveal significant differences with the human enzyme, notably in the lid region and in the P-loop which may be exploited in the rational design of Plasmodium-specific TMPK inhibitors with therapeutic potential.
Structural basis for the efficient phosphorylation of AZT-MP (3'-azido-3'-deoxythymidine monophosphate) and dGMP by Plasmodium falciparum type I thymidylate kinase.,Whittingham JL, Carrero-Lerida J, Brannigan JA, Ruiz-Perez LM, Silva AP, Fogg MJ, Wilkinson AJ, Gilbert IH, Wilson KS, Gonzalez-Pacanowska D Biochem J. 2010 May 27;428(3):499-509. PMID:20353400[5]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Kandeel M, Kitade Y. Molecular characterization, heterologous expression and kinetic analysis of recombinant Plasmodium falciparum thymidylate kinase. J Biochem. 2008 Aug;144(2):245-50. PMID:18477629 doi:10.1093/jb/mvn062
- ↑ Kandeel M, Ando T, Kitamura Y, Abdel-Aziz M, Kitade Y. Mutational, inhibitory and microcalorimetric analyses of Plasmodium falciparum TMP kinase. Implications for drug discovery. Parasitology. 2009 Jan;136(1):11-25. PMID:19126267 doi:10.1017/S0031182008005301
- ↑ Whittingham JL, Carrero-Lerida J, Brannigan JA, Ruiz-Perez LM, Silva AP, Fogg MJ, Wilkinson AJ, Gilbert IH, Wilson KS, Gonzalez-Pacanowska D. Structural basis for the efficient phosphorylation of AZT-MP (3'-azido-3'-deoxythymidine monophosphate) and dGMP by Plasmodium falciparum type I thymidylate kinase. Biochem J. 2010 May 27;428(3):499-509. PMID:20353400 doi:10.1042/BJ20091880
- ↑ Chen MD, Fucci IJ, Sinha K, Rule GS. dGMP Binding to Thymidylate Kinase from Plasmodium falciparum Shows Half-Site Binding and Induces Protein Dynamics at the Dimer Interface. Biochemistry. 2020 Feb 11;59(5):694-703. PMID:31934749 doi:10.1021/acs.biochem.9b00898
- ↑ Whittingham JL, Carrero-Lerida J, Brannigan JA, Ruiz-Perez LM, Silva AP, Fogg MJ, Wilkinson AJ, Gilbert IH, Wilson KS, Gonzalez-Pacanowska D. Structural basis for the efficient phosphorylation of AZT-MP (3'-azido-3'-deoxythymidine monophosphate) and dGMP by Plasmodium falciparum type I thymidylate kinase. Biochem J. 2010 May 27;428(3):499-509. PMID:20353400 doi:10.1042/BJ20091880
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