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| | <StructureSection load='1ia1' size='340' side='right'caption='[[1ia1]], [[Resolution|resolution]] 1.70Å' scene=''> | | <StructureSection load='1ia1' size='340' side='right'caption='[[1ia1]], [[Resolution|resolution]] 1.70Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[1ia1]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_11006_[[candida_stellatoidea]] Atcc 11006 [[candida stellatoidea]]]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1IA1 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=1IA1 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[1ia1]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Candida_albicans Candida albicans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1IA1 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1IA1 FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NDP:NADPH+DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE+PHOSPHATE'>NDP</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene>, <scene name='pdbligand=TQ3:5-PHENYLSULFANYL-2,4-QUINAZOLINEDIAMINE'>TQ3</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]] 1.7Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1aoe|1aoe]], [[1ai9|1ai9]], [[1ia2|1ia2]], [[1ia3|1ia3]], [[1ia4|1ia4]]</td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NDP:NADPH+DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE+PHOSPHATE'>NDP</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene>, <scene name='pdbligand=TQ3:5-PHENYLSULFANYL-2,4-QUINAZOLINEDIAMINE'>TQ3</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">DFR1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=5476 ATCC 11006 [[Candida stellatoidea]]])</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=1ia1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ia1 OCA], [https://pdbe.org/1ia1 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ia1 RCSB], [https://www.ebi.ac.uk/pdbsum/1ia1 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ia1 ProSAT]</span></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'>[http://proteopedia.org/fgij/fg.htm?mol=1ia1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ia1 OCA], [http://pdbe.org/1ia1 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1ia1 RCSB], [http://www.ebi.ac.uk/pdbsum/1ia1 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1ia1 ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/DYR_CANAX DYR_CANAX]] Key enzyme in folate metabolism. Catalyzes an essential reaction for de novo glycine and purine synthesis, and for DNA precursor synthesis. | + | [https://www.uniprot.org/uniprot/DYR_CANAX DYR_CANAX] Key enzyme in folate metabolism. Catalyzes an essential reaction for de novo glycine and purine synthesis, and for DNA precursor synthesis. |
| | == 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: Candida albicans]] |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Howard, A J]] | + | [[Category: Howard AJ]] |
| - | [[Category: Kuyper, L F]] | + | [[Category: Kuyper LF]] |
| - | [[Category: Whitlow, M]] | + | [[Category: Whitlow M]] |
| - | [[Category: Antifungal target]]
| + | |
| - | [[Category: Oxidoreductase]]
| + | |
| - | [[Category: Reductase]]
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| Structural highlights
Function
DYR_CANAX Key enzyme in folate metabolism. Catalyzes an essential reaction for de novo glycine and purine synthesis, and for DNA precursor synthesis.
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
X-ray crystallographic analysis of 5-(4'-substituted phenyl)sulfanyl-2,4-diaminoquinazoline inhibitors in ternary complex with Candida albicans dihydrofolate reductase (DHFR) and NADPH revealed two distinct modes of binding. The two compounds with small 4'-substituents (H and CH3) were found to bind with the phenyl group oriented in the plane of the quinazoline ring system and positioned adjacent to the C-helix. In contrast, the more selective inhibitors with larger 4'-substituents (tert-butyl and N-morpholino) were bound to the enzyme with the phenyl group perpendicular to the quinazoline ring and positioned in the region of the active site that typically binds the dihydronicotinamide moiety of NADPH. The cofactor appeared bound to DHFR but with the disordered dihydronicotinamide swung away from the protein surface and into solution. This unusual inhibitor binding mode may play an important role in the high DHFR selectivity of these compounds and also may provide new ideas for inhibitor design.
X-Ray crystal structures of Candida albicans dihydrofolate reductase: high resolution ternary complexes in which the dihydronicotinamide moiety of NADPH is displaced by an inhibitor.,Whitlow M, Howard AJ, Stewart D, Hardman KD, Chan JH, Baccanari DP, Tansik RL, Hong JS, Kuyper LF J Med Chem. 2001 Aug 30;44(18):2928-32. PMID:11520201[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Whitlow M, Howard AJ, Stewart D, Hardman KD, Chan JH, Baccanari DP, Tansik RL, Hong JS, Kuyper LF. X-Ray crystal structures of Candida albicans dihydrofolate reductase: high resolution ternary complexes in which the dihydronicotinamide moiety of NADPH is displaced by an inhibitor. J Med Chem. 2001 Aug 30;44(18):2928-32. PMID:11520201
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