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| | <StructureSection load='1h5z' size='340' side='right'caption='[[1h5z]], [[Resolution|resolution]] 2.05Å' scene=''> | | <StructureSection load='1h5z' size='340' side='right'caption='[[1h5z]], [[Resolution|resolution]] 2.05Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[1h5z]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/"bacillus_tuberculosis"_(zopf_1883)_klein_1884 "bacillus tuberculosis" (zopf 1883) klein 1884]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1H5Z OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1H5Z FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[1h5z]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Mycobacterium_tuberculosis Mycobacterium tuberculosis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1H5Z OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1H5Z FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FE2:FE+(II)+ION'>FE2</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</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]] 2.05Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1e9x|1e9x]], [[1ea1|1ea1]]</div></td></tr>
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FE2:FE+(II)+ION'>FE2</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CYP51, RV0764C, MTCY369.09C ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1773 "Bacillus tuberculosis" (Zopf 1883) Klein 1884])</td></tr> | + | |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Sterol_14-demethylase Sterol 14-demethylase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.14.13.70 1.14.13.70] </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=1h5z FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1h5z OCA], [https://pdbe.org/1h5z PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1h5z RCSB], [https://www.ebi.ac.uk/pdbsum/1h5z PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1h5z ProSAT]</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=1h5z FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1h5z OCA], [https://pdbe.org/1h5z PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1h5z RCSB], [https://www.ebi.ac.uk/pdbsum/1h5z PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1h5z ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[https://www.uniprot.org/uniprot/CP51_MYCTU CP51_MYCTU]] Its precise biological substrate is not known. Catalyzes C14-demethylation of lanosterol, 24,25-dihydrolanosterol and obtusifoliol which is critical for ergosterol biosynthesis. It transforms lanosterol into 4,4'-dimethyl cholesta-8,14,24-triene-3-beta-ol.<ref>PMID:9756611</ref> <ref>PMID:10430874</ref>
| + | [https://www.uniprot.org/uniprot/CP51_MYCTU CP51_MYCTU] Its precise biological substrate is not known. Catalyzes C14-demethylation of lanosterol, 24,25-dihydrolanosterol and obtusifoliol which is critical for ergosterol biosynthesis. It transforms lanosterol into 4,4'-dimethyl cholesta-8,14,24-triene-3-beta-ol.<ref>PMID:9756611</ref> <ref>PMID:10430874</ref> |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | </StructureSection> | | </StructureSection> |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Sterol 14-demethylase]] | + | [[Category: Mycobacterium tuberculosis]] |
| - | [[Category: Arase, M]] | + | [[Category: Arase M]] |
| - | [[Category: Podust, L M]] | + | [[Category: Podust LM]] |
| - | [[Category: Waterman, M R]] | + | [[Category: Waterman MR]] |
| - | [[Category: 14 alpha-sterol demethylase]]
| + | |
| - | [[Category: Cytochrome p450]]
| + | |
| - | [[Category: Electron transport]]
| + | |
| - | [[Category: Ferric low-spin]]
| + | |
| - | [[Category: Monooxygenase]]
| + | |
| - | [[Category: Oxidoreductase]]
| + | |
| - | [[Category: Sterol biosynthesis]]
| + | |
| Structural highlights
Function
CP51_MYCTU Its precise biological substrate is not known. Catalyzes C14-demethylation of lanosterol, 24,25-dihydrolanosterol and obtusifoliol which is critical for ergosterol biosynthesis. It transforms lanosterol into 4,4'-dimethyl cholesta-8,14,24-triene-3-beta-ol.[1] [2]
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
Sterol 14alpha-demethylases (CYP51) are essential enzymes in sterol biosynthesis in eukaryotes and drug targets in antifungal therapy. Here, we report CYP51 structures in ligand-free and estriol bound forms. Using estriol as a probe, we determined orientation of the substrate in the active site, elucidated protein contacts with the invariant 3beta-hydroxy group of a sterol, and identified F78 as a key discriminator between 4alpha-methylated and 4alpha,beta-dimethylated substrates. Analysis of CYP51 dynamics revealed that the C helix undergoes helix-coil transition upon binding and dissociation of a ligand. Loss of helical structure of the C helix in the ligand-free form results in an unprecedented opening of the substrate binding site. Upon binding of estriol, the BC loop loses contacts with molecular surface and tends to adopt a closed conformation. A mechanism for azole resistance in the yeast pathogen Candida albicans associated with mutations in the ERG11 gene encoding CYP51 is suggested based on CYP51 protein dynamics.
Estriol bound and ligand-free structures of sterol 14alpha-demethylase.,Podust LM, Yermalitskaya LV, Lepesheva GI, Podust VN, Dalmasso EA, Waterman MR Structure. 2004 Nov;12(11):1937-45. PMID:15530358[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Aoyama Y, Horiuchi T, Gotoh O, Noshiro M, Yoshida Y. CYP51-like gene of Mycobacterium tuberculosis actually encodes a P450 similar to eukaryotic CYP51. J Biochem. 1998 Oct;124(4):694-6. PMID:9756611
- ↑ Bellamine A, Mangla AT, Nes WD, Waterman MR. Characterization and catalytic properties of the sterol 14alpha-demethylase from Mycobacterium tuberculosis. Proc Natl Acad Sci U S A. 1999 Aug 3;96(16):8937-42. PMID:10430874
- ↑ Podust LM, Yermalitskaya LV, Lepesheva GI, Podust VN, Dalmasso EA, Waterman MR. Estriol bound and ligand-free structures of sterol 14alpha-demethylase. Structure. 2004 Nov;12(11):1937-45. PMID:15530358 doi:10.1016/j.str.2004.08.009
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