7cpp

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(New page: 200px<br /><applet load="7cpp" size="450" color="white" frame="true" align="right" spinBox="true" caption="7cpp, resolution 2.0&Aring;" /> '''THE STRUCTURAL BASIS ...)
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[[Image:7cpp.gif|left|200px]]<br /><applet load="7cpp" size="450" color="white" frame="true" align="right" spinBox="true"
 
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caption="7cpp, resolution 2.0&Aring;" />
 
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'''THE STRUCTURAL BASIS FOR SUBSTRATE-INDUCED CHANGES IN REDOX POTENTIAL AND SPIN EQUILIBRIUM IN CYTOCHROME P450(CAM)'''<br />
 
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==Overview==
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==THE STRUCTURAL BASIS FOR SUBSTRATE-INDUCED CHANGES IN REDOX POTENTIAL AND SPIN EQUILIBRIUM IN CYTOCHROME P450(CAM)==
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The crystal structures of cytochrome P-450CAM complexed with the, alternative substrates norcamphor and adamantanone have been refined at, 2.0-A resolution and compared with the native, camphor-bound form of the, enzyme. Norcamphor lacks the 8-, 9-, and 10-methyl groups of camphor., Thus, specific interactions between these groups and phenylalanine 87 and, valines 247 and 295 are missing in the norcamphor complex. As a result, norcamphor binds about 0.9 A further from the oxygen-binding site than, does camphor, which allows sufficient room for a water molecule or, hydroxide ion to remain coordinated with the heme iron atom. The larger, adamantanone occupies a position closer to that of camphor and, as in the, camphor-bound enzyme, the heme iron remains pentacoordinate with no, solvent molecule coordinated as a sixth ligand. A comparison of, crystallographic temperature factors indicates that norcamphor is more, "loosely" bound than are either camphor or adamantanone, as might be, expected from the relative sizes of the different substrates. The looser, fit of norcamphor in the active-site pocket results in a less specific, pattern of hydroxylation. The presence of an aqua ligand is the likely, structural basis for the norcamphor-P-450CAM complex having both a lower, redox potential and higher percentage of low-spin heme than do either the, camphor-P-450CAM or adamantanone-P-450CAM complexes.
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<StructureSection load='7cpp' size='340' side='right'caption='[[7cpp]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[7cpp]] 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=7CPP OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7CPP FirstGlance]. <br>
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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]] 2&#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=NCM:NORCAMPHOR'>NCM</scene></td></tr>
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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=7cpp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7cpp OCA], [https://pdbe.org/7cpp PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7cpp RCSB], [https://www.ebi.ac.uk/pdbsum/7cpp PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7cpp 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/cp/7cpp_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=7cpp ConSurf].
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<div style="clear:both"></div>
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==About this Structure==
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==See Also==
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7CPP is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Pseudomonas_putida Pseudomonas putida] with HEM and NCM as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/Camphor_5-monooxygenase Camphor 5-monooxygenase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.14.15.1 1.14.15.1] Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=7CPP OCA].
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*[[Cytochrome P450 3D structures|Cytochrome P450 3D structures]]
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__TOC__
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==Reference==
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</StructureSection>
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The structural basis for substrate-induced changes in redox potential and spin equilibrium in cytochrome P-450CAM., Raag R, Poulos TL, Biochemistry. 1989 Jan 24;28(2):917-22. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=2713354 2713354]
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[[Category: Large Structures]]
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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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[[Category: Raag R]]
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[[Category: Raag, R.]]
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[[Category: HEM]]
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[[Category: NCM]]
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[[Category: oxidoreductase(oxygenase)]]
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''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Tue Nov 20 15:20:31 2007''
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THE STRUCTURAL BASIS FOR SUBSTRATE-INDUCED CHANGES IN REDOX POTENTIAL AND SPIN EQUILIBRIUM IN CYTOCHROME P450(CAM)

PDB ID 7cpp

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