1opy

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[[Image:1opy.jpg|left|200px]]
 
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{{Structure
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==KSI==
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|PDB= 1opy |SIZE=350|CAPTION= <scene name='initialview01'>1opy</scene>, resolution 1.9&Aring;
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<StructureSection load='1opy' size='340' side='right'caption='[[1opy]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
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|SITE= <scene name='pdbsite=A:Active+Site'>A</scene>
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== Structural highlights ==
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|LIGAND=
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<table><tr><td colspan='2'>[[1opy]] 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=1OPY OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1OPY FirstGlance]. <br>
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|ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/Steroid_Delta-isomerase Steroid Delta-isomerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=5.3.3.1 5.3.3.1] </span>
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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]] 1.9&#8491;</td></tr>
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|GENE=
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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=1opy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1opy OCA], [https://pdbe.org/1opy PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1opy RCSB], [https://www.ebi.ac.uk/pdbsum/1opy PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1opy ProSAT]</span></td></tr>
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|DOMAIN=
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</table>
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|RELATEDENTRY=
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== Function ==
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1opy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1opy OCA], [http://www.ebi.ac.uk/pdbsum/1opy PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1opy RCSB]</span>
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[https://www.uniprot.org/uniprot/SDIS_PSEPU SDIS_PSEPU]
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}}
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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/op/1opy_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=1opy ConSurf].
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<div style="clear:both"></div>
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'''KSI'''
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==See Also==
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*[[Ketosteroid Isomerase|Ketosteroid Isomerase]]
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__TOC__
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==Overview==
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</StructureSection>
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The three-dimensional structure of the enzyme 3-oxo-delta5-steroid isomerase (E.C. 5.3.3.1), a 28-kilodalton symmetrical dimer, was solved by multidimensional heteronuclear magnetic resonance spectroscopy. The two independently folded monomers pack together by means of extensive hydrophobic and electrostatic interactions. Each monomer comprises three alpha helices and a six-strand mixed beta-pleated sheet arranged to form a deep hydrophobic cavity. Catalytically important residues Tyr14 (general acid) and Asp38 (general base) are located near the bottom of the cavity and positioned as expected from mechanistic hypotheses. An unexpected acid group (Asp99) is also located in the active site adjacent to Tyr14, and kinetic and binding studies of the Asp99 to Ala mutant demonstrate that Asp99 contributes to catalysis by stabilizing the intermediate.
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[[Category: Large Structures]]
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==About this Structure==
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1OPY 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=1OPY OCA].
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==Reference==
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Solution structure of 3-oxo-delta5-steroid isomerase., Wu ZR, Ebrahimian S, Zawrotny ME, Thornburg LD, Perez-Alvarado GC, Brothers P, Pollack RM, Summers MF, Science. 1997 Apr 18;276(5311):415-8. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/9103200 9103200]
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[[Category: Pseudomonas putida]]
[[Category: Pseudomonas putida]]
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[[Category: Single protein]]
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[[Category: Cha S-S]]
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[[Category: Steroid Delta-isomerase]]
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[[Category: Cho H-S]]
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[[Category: Cha, S S.]]
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[[Category: Cho M-J]]
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[[Category: Cho, H S.]]
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[[Category: Choi K-Y]]
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[[Category: Cho, M J.]]
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[[Category: Ha N-C]]
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[[Category: Choi, K Y.]]
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[[Category: Kim J-S]]
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[[Category: Ha, N C.]]
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[[Category: Kim S-W]]
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[[Category: Kim, J S.]]
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[[Category: Oh B-H]]
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[[Category: Kim, S W.]]
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[[Category: Oh, B H.]]
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[[Category: high resolution]]
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[[Category: isomerase]]
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[[Category: ksi]]
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[[Category: low-barrier hydrogen bond]]
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[[Category: pseudomonas putida biotype b]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 22:48:40 2008''
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KSI

PDB ID 1opy

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