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| | <StructureSection load='2bl9' size='340' side='right'caption='[[2bl9]], [[Resolution|resolution]] 1.90Å' scene=''> | | <StructureSection load='2bl9' size='340' side='right'caption='[[2bl9]], [[Resolution|resolution]] 1.90Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2bl9]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Haemamoeba_vivax Haemamoeba vivax]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BL9 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2BL9 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2bl9]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Plasmodium_vivax Plasmodium vivax]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BL9 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2BL9 FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CP6:5-(4-CHLORO-PHENYL)-6-ETHYL-PYRIMIDINE-2,4-DIAMINE'>CP6</scene>, <scene name='pdbligand=NDP:NADPH+DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE+PHOSPHATE'>NDP</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]] 1.9Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1j3i|1j3i]], [[1j3j|1j3j]], [[1j3k|1j3k]], [[2bla|2bla]], [[2blb|2blb]], [[2blc|2blc]]</td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CP6:5-(4-CHLORO-PHENYL)-6-ETHYL-PYRIMIDINE-2,4-DIAMINE'>CP6</scene>, <scene name='pdbligand=NDP:NADPH+DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE+PHOSPHATE'>NDP</scene></td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Dihydrofolate_reductase Dihydrofolate reductase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.5.1.3 1.5.1.3] </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=2bl9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2bl9 OCA], [https://pdbe.org/2bl9 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2bl9 RCSB], [https://www.ebi.ac.uk/pdbsum/2bl9 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2bl9 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=2bl9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2bl9 OCA], [http://pdbe.org/2bl9 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2bl9 RCSB], [http://www.ebi.ac.uk/pdbsum/2bl9 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2bl9 ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | + | == Function == |
| | + | [https://www.uniprot.org/uniprot/DRTS_PLAVI DRTS_PLAVI] Bifunctional enzyme. Involved in de novo dTMP biosynthesis. Key enzyme in folate metabolism. Catalyzes an essential reaction for de novo glycine and purine synthesis, DNA precursor synthesis, and for the conversion of dUMP to dTMP. |
| | == 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: Dihydrofolate reductase]] | |
| - | [[Category: Haemamoeba vivax]] | |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Chitnumsub, P]] | + | [[Category: Plasmodium vivax]] |
| - | [[Category: Khongsuk, P]] | + | [[Category: Chitnumsub P]] |
| - | [[Category: Kongsaeree, P]] | + | [[Category: Khongsuk P]] |
| - | [[Category: Leartsakulpanich, U]] | + | [[Category: Kongsaeree P]] |
| - | [[Category: Tarnchompoo, B]] | + | [[Category: Leartsakulpanich U]] |
| - | [[Category: Walkinshaw, M D]] | + | [[Category: Tarnchompoo B]] |
| - | [[Category: Yuthavong, Y]] | + | [[Category: Walkinshaw MD]] |
| - | [[Category: Drug resistance]]
| + | [[Category: Yuthavong Y]] |
| - | [[Category: Malaria]]
| + | |
| - | [[Category: Oxidoreductase]]
| + | |
| - | [[Category: Plamodium vivax]]
| + | |
| - | [[Category: Pyrimethamine]]
| + | |
| Structural highlights
Function
DRTS_PLAVI Bifunctional enzyme. Involved in de novo dTMP biosynthesis. Key enzyme in folate metabolism. Catalyzes an essential reaction for de novo glycine and purine synthesis, DNA precursor synthesis, and for the conversion of dUMP to dTMP.
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
Pyrimethamine (Pyr) targets dihydrofolate reductase of Plasmodium vivax (PvDHFR) as well as other malarial parasites, but its use as antimalarial is hampered by the widespread high resistance. Comparison of the crystal structures of PvDHFR from wild-type and the Pyr-resistant (SP21, Ser-58 --> Arg + Ser-117 --> Asn) strain as complexes with NADPH and Pyr or its analog lacking p-Cl (Pyr20) clearly shows that the steric conflict arising from the side chain of Asn-117 in the mutant enzyme, accompanied by the loss of binding to Ser-120, is mainly responsible for the reduction in binding of Pyr. Pyr20 still effectively inhibits both the wild-type and SP21 proteins, and the x-ray structures of these complexes show how Pyr20 fits into both active sites without steric strain. These structural insights suggest a general approach for developing new generations of antimalarial DHFR inhibitors that, by only occupying substrate space of the active site, would retain binding affinity with the mutant enzymes.
Crystal structure of dihydrofolate reductase from Plasmodium vivax: pyrimethamine displacement linked with mutation-induced resistance.,Kongsaeree P, Khongsuk P, Leartsakulpanich U, Chitnumsub P, Tarnchompoo B, Walkinshaw MD, Yuthavong Y Proc Natl Acad Sci U S A. 2005 Sep 13;102(37):13046-51. Epub 2005 Aug 31. PMID:16135570[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Kongsaeree P, Khongsuk P, Leartsakulpanich U, Chitnumsub P, Tarnchompoo B, Walkinshaw MD, Yuthavong Y. Crystal structure of dihydrofolate reductase from Plasmodium vivax: pyrimethamine displacement linked with mutation-induced resistance. Proc Natl Acad Sci U S A. 2005 Sep 13;102(37):13046-51. Epub 2005 Aug 31. PMID:16135570
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