2h8k

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[[Image:2h8k.gif|left|200px]]<br /><applet load="2h8k" size="350" color="white" frame="true" align="right" spinBox="true"
 
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caption="2h8k, resolution 3.200&Aring;" />
 
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'''Human Sulfotranferase SULT1C3 in complex with PAP'''<br />
 
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==Overview==
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==Human Sulfotranferase SULT1C3 in complex with PAP==
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Cytosolic sulfotransferases sulfate steroids such as estrogens and hydroxysteroids. The enzymes, including human estrogen sulfotransferase (hEST) and hydroxysteroid sulfotransferase (hHST), are generally homodimers in solution with mouse estrogen sulfotransferase (mEST) being one of few exceptions. To identify the amino acid residues responsible for the dimerization, eight residues on the surface of hEST were mutated to their counterparts in mEST and mutated hESTs were then analyzed by gel filtration chromatography. A single mutation of Val(269) to Glu was sufficient to convert hEST to a monomer and the corresponding mutation of Val(260) also altered hHST to a monomer. The hHST crystal structure revealed a short stretch of peptide with the side-chains from two hHST monomers forming a hydrophobic zipper-like structure enforced by ion pairs at both ends. This peptide consisted of 10 residues near the C-terminus that, including the critical Val residue, is conserved as KXXXTVXXXE in nearly all cytosolic sulfotransferases. When mEST underwent the double mutations Pro269Thr/Glu270Val dimerization resulted. Thus, the KXXXTVXXXE sequence appears to be the common protein-protein interaction motif that mediates the homo- as well as heterodimerization of cytosolic sulfotransferases.
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<StructureSection load='2h8k' size='340' side='right'caption='[[2h8k]], [[Resolution|resolution]] 3.20&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[2h8k]] is a 2 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=2H8K OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2H8K 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]] 3.2&#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=A3P:ADENOSINE-3-5-DIPHOSPHATE'>A3P</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=2h8k FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2h8k OCA], [https://pdbe.org/2h8k PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2h8k RCSB], [https://www.ebi.ac.uk/pdbsum/2h8k PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2h8k ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/ST1C3_HUMAN ST1C3_HUMAN] Sulfotransferase that utilizes 3'-phospho-5'-adenylyl sulfate (PAPS) as sulfonate donor and has low sulphotransferase activity towards various substrates with alcohol groups (in vitro). May catalyze the sulfate conjugation of xenobiotic compounds and endogenous substrates.<ref>PMID:17936463</ref> <ref>PMID:17425406</ref>
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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/h8/2h8k_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=2h8k ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The human cytosolic sulfotransfases (hSULTs) comprise a family of 12 phase II enzymes involved in the metabolism of drugs and hormones, the bioactivation of carcinogens, and the detoxification of xenobiotics. Knowledge of the structural and mechanistic basis of substrate specificity and activity is crucial for understanding steroid and hormone metabolism, drug sensitivity, pharmacogenomics, and response to environmental toxins. We have determined the crystal structures of five hSULTs for which structural information was lacking, and screened nine of the 12 hSULTs for binding and activity toward a panel of potential substrates and inhibitors, revealing unique "chemical fingerprints" for each protein. The family-wide analysis of the screening and structural data provides a comprehensive, high-level view of the determinants of substrate binding, the mechanisms of inhibition by substrates and environmental toxins, and the functions of the orphan family members SULT1C3 and SULT4A1. Evidence is provided for structural "priming" of the enzyme active site by cofactor binding, which influences the spectrum of small molecules that can bind to each enzyme. The data help explain substrate promiscuity in this family and, at the same time, reveal new similarities between hSULT family members that were previously unrecognized by sequence or structure comparison alone.
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==About this Structure==
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Structural and chemical profiling of the human cytosolic sulfotransferases.,Allali-Hassani A, Pan PW, Dombrovski L, Najmanovich R, Tempel W, Dong A, Loppnau P, Martin F, Thornton J, Edwards AM, Bochkarev A, Plotnikov AN, Vedadi M, Arrowsmith CH PLoS Biol. 2007 May;5(5):e97. PMID:17425406<ref>PMID:17425406</ref>
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2H8K is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] with <scene name='pdbligand=A3P:'>A3P</scene> as [http://en.wikipedia.org/wiki/ligand ligand]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2H8K OCA].
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==Reference==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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The dimerization motif of cytosolic sulfotransferases., Petrotchenko EV, Pedersen LC, Borchers CH, Tomer KB, Negishi M, FEBS Lett. 2001 Feb 9;490(1-2):39-43. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=11172807 11172807]
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</div>
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[[Category: Homo sapiens]]
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<div class="pdbe-citations 2h8k" style="background-color:#fffaf0;"></div>
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[[Category: Single protein]]
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[[Category: Arrowsmith, C H.]]
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[[Category: Bochkarev, A.]]
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[[Category: Dombrovski, L.]]
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[[Category: Edwards, A M.]]
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[[Category: Loppnau, P.]]
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[[Category: Plotnikov, A N.]]
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[[Category: SGC, Structural Genomics Consortium.]]
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[[Category: Sundstrom, M.]]
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[[Category: Tempel, W.]]
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[[Category: Weigelt, J.]]
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[[Category: A3P]]
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[[Category: pap]]
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[[Category: sgc]]
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[[Category: structural genomics]]
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[[Category: structural genomics consortium]]
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[[Category: sulfate conjugation]]
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[[Category: sulfotransferase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 17:39:15 2008''
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==See Also==
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*[[Sulfotransferase 3D structures|Sulfotransferase 3D structures]]
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== References ==
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<references/>
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__TOC__
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</StructureSection>
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[[Category: Homo sapiens]]
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[[Category: Large Structures]]
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[[Category: Arrowsmith CH]]
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[[Category: Bochkarev A]]
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[[Category: Dombrovski L]]
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[[Category: Edwards AM]]
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[[Category: Loppnau P]]
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[[Category: Plotnikov AN]]
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[[Category: Sundstrom M]]
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[[Category: Tempel W]]
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[[Category: Weigelt J]]

Current revision

Human Sulfotranferase SULT1C3 in complex with PAP

PDB ID 2h8k

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