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1phd

From Proteopedia

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[[Image:1phd.jpg|left|200px]]
 
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==CRYSTAL STRUCTURES OF METYRAPONE-AND PHENYLIMIDAZOLE-INHIBITED COMPLEXES OF CYTOCHROME P450-CAM==
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The line below this paragraph, containing "STRUCTURE_1phd", creates the "Structure Box" on the page.
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<StructureSection load='1phd' size='340' side='right'caption='[[1phd]], [[Resolution|resolution]] 1.60&Aring;' scene=''>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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== Structural highlights ==
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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<table><tr><td colspan='2'>[[1phd]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Pseudomonas_putida Pseudomonas putida]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1PHD OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1PHD FirstGlance]. <br>
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or leave the SCENE parameter empty for the default display.
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.6&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=PIW:1-PHENYL-1H-IMIDAZOLE'>PIW</scene></td></tr>
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{{STRUCTURE_1phd| PDB=1phd | SCENE= }}
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1phd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1phd OCA], [https://pdbe.org/1phd PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1phd RCSB], [https://www.ebi.ac.uk/pdbsum/1phd PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1phd ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/CPXA_PSEPU CPXA_PSEPU] Involved in a camphor oxidation system.
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ph/1phd_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</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=1phd ConSurf].
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<div style="clear:both"></div>
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'''CRYSTAL STRUCTURES OF METYRAPONE-AND PHENYLIMIDAZOLE-INHIBITED COMPLEXES OF CYTOCHROME P450-CAM'''
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==See Also==
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*[[Cytochrome P450 3D structures|Cytochrome P450 3D structures]]
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__TOC__
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==Overview==
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</StructureSection>
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The crystal structures of metyrapone- and 1-, 2-, and 4-phenylimidazole-inhibited complexes of cytochrome P-450cam have been refined to a nominal resolution of 2.1 A and compared with the 1.63-A camphor-bound structure. With the exception of 2-phenylimidazole, each of the inhibitors forms an N-Fe bond with the heme iron atom while part of the inhibitor sits in the camphor-binding pocket. In the 2-phenylimidazole complex, a water molecule or hydroxide ion coordinates with the heme iron atom while the inhibitor binds in the camphor pocket adjacent to the aqua ligand. Each of the inhibitors forces the central region of helix I that forms part of the O2 binding pocket to move away from the inhibitor, with the exception of 2-phenylimidazole where the helix moves in toward the inhibitor. In addition, the Tyr-96 region, which provides specific contact points with the substrate, is perturbed, although to varying degrees with each inhibitor. These perturbations include large, localized changes in Debye-Waller or temperature factors, indicative of changes in dynamical fluctuations. The largest inhibitor, metyrapone, causes the fewest changes, while 2-phenylimidazole binding causes the largest, especially in helix I. The large 2-phenylimidazole-induced movement of helix I can be rationalized on the basis of the inhibitor imidazole group's hydrogen-bonding requirements.
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[[Category: Large Structures]]
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==About this Structure==
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1PHD is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Pseudomonas_putida Pseudomonas putida]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1PHD OCA].
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==Reference==
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Crystal structures of metyrapone- and phenylimidazole-inhibited complexes of cytochrome P-450cam., Poulos TL, Howard AJ, Biochemistry. 1987 Dec 15;26(25):8165-74. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/3442650 3442650]
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[[Category: Camphor 5-monooxygenase]]
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[[Category: Pseudomonas putida]]
[[Category: Pseudomonas putida]]
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[[Category: Single protein]]
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[[Category: Poulos TL]]
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[[Category: Poulos, T L.]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 05:05:24 2008''
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Current revision

CRYSTAL STRUCTURES OF METYRAPONE-AND PHENYLIMIDAZOLE-INHIBITED COMPLEXES OF CYTOCHROME P450-CAM

PDB ID 1phd

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