2q9g: Difference between revisions

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-{{Seed}}
-[[Image:2q9g.png|left|200px]]
-<!--
+==Crystal structure of human cytochrome P450 46A1==
-The line below this paragraph, containing "STRUCTURE_2q9g", creates the "Structure Box" on the page.
+<StructureSection load='2q9g' size='340' side='right'caption='[[2q9g]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
-You may change the PDB parameter (which sets the PDB file loaded into the applet)
+== Structural highlights ==
-or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
+<table><tr><td colspan='2'>[[2q9g]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2Q9G OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2Q9G FirstGlance]. <br>
-or leave the SCENE parameter empty for the default display.
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.4&#8491;</td></tr>
--->
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene></td></tr>
-{{STRUCTURE_2q9g|  PDB=2q9g  |  SCENE=  }}
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2q9g FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2q9g OCA], [https://pdbe.org/2q9g PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2q9g RCSB], [https://www.ebi.ac.uk/pdbsum/2q9g PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2q9g ProSAT]</span></td></tr>
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/CP46A_HUMAN CP46A_HUMAN] Involved in the turnover of cholesterol. It converts cholesterol into 24S-hydroxycholesterol and, to a lesser extent, 25-hydroxycholesterol.
+== 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/q9/2q9g_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=2q9g ConSurf].
+<div style="clear:both"></div>
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+By converting cholesterol to 24S-hydroxycholesterol, cytochrome P450 46A1 (CYP46A1) initiates the major pathway for cholesterol removal from the brain. Two crystal structures of CYP46A1 were determined. First is the 1.9-A structure of CYP46A1 complexed with a high-affinity substrate cholesterol 3-sulfate (CH-3S). The second structure is that of the substrate-free CYP46A1 at 2.4-A resolution. CH-3S is bound in the productive orientation and occupies the entire length of the banana-shaped hydrophobic active-site cavity. A unique helix B'-C loop insertion (residues 116-120) contributes to positioning cholesterol for oxygenation catalyzed by CYP46A1. A comparison with the substrate-free structure reveals substantial substrate-induced conformational changes in CYP46A1 and suggests that structurally distinct compounds could bind in the enzyme active site. In vitro assays were performed to characterize the effect of different therapeutic agents on cholesterol hydroxylase activity of purified full-length recombinant CYP46A1, and several strong inhibitors and modest coactivators of CYP46A1 were identified. Structural and biochemical data provide evidence that CYP46A1 activity could be altered by exposure to some therapeutic drugs and potentially other xenobiotics.
-===Crystal structure of human cytochrome P450 46A1===
+Crystal structures of substrate-bound and substrate-free cytochrome P450 46A1, the principal cholesterol hydroxylase in the brain.,Mast N, White MA, Bjorkhem I, Johnson EF, Stout CD, Pikuleva IA Proc Natl Acad Sci U S A. 2008 Jul 15;105(28):9546-51. Epub 2008 Jul 9. PMID:18621681<ref>PMID:18621681</ref>
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
+</div>
+<div class="pdbe-citations 2q9g" style="background-color:#fffaf0;"></div>
-<!--
+==See Also==
-The line below this paragraph, {{ABSTRACT_PUBMED_18621681}}, adds the Publication Abstract to the page
+*[[Cytochrome P450 3D structures|Cytochrome P450 3D structures]]
-(as it appears on PubMed at http://www.pubmed.gov), where 18621681 is the PubMed ID number.
+== References ==
--->
+<references/>
-{{ABSTRACT_PUBMED_18621681}}
+__TOC__
+</StructureSection>
-==About this Structure==
-Q9G is a 1 chain structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2Q9G OCA].
-==Reference==
-<ref group="xtra">PMID:18621681</ref><ref group="xtra">PMID:18453684</ref><references group="xtra"/>
-[[Category: Cholesterol 24-hydroxylase]]
 [[Category: Homo sapiens]]
-[[Category: Johnson, E F.]]
+[[Category: Large Structures]]
-[[Category: Mast, N V.]]
+[[Category: Johnson EF]]
-[[Category: Pikuleva, I A.]]
+[[Category: Mast NV]]
-[[Category: Stout, C D.]]
+[[Category: Pikuleva IA]]
-[[Category: White, M A.]]
+[[Category: Stout CD]]
-[[Category: Cholesterol metabolic enzyme]]
+[[Category: White MA]]
-[[Category: Cyp46a1]]
-[[Category: Heme]]
-[[Category: Monooxygenase]]
-[[Category: Oxidoreductase]]
-[[Category: P450]]
-[[Category: P450 46a1]]
-''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Feb 16 19:40:51 2009''