1q1z: Difference between revisions
New page: left|200px<br /> <applet load="1q1z" size="450" color="white" frame="true" align="right" spinBox="true" caption="1q1z, resolution 2.40Å" /> '''Crystal structure o... |
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== | ==Crystal structure of human cholesterol sulfotransferase (SULT2B1b) in the presence of PAP== | ||
The gene for human hydroxysteroid sulfotransferase (SULT2B1) encodes two | <StructureSection load='1q1z' size='340' side='right'caption='[[1q1z]], [[Resolution|resolution]] 2.40Å' scene=''> | ||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[1q1z]] 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=1Q1Z OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1Q1Z FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.4Å</td></tr> | |||
<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>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1q1z FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1q1z OCA], [https://pdbe.org/1q1z PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1q1z RCSB], [https://www.ebi.ac.uk/pdbsum/1q1z PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1q1z ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/ST2B1_HUMAN ST2B1_HUMAN] Sulfotransferase that utilizes 3'-phospho-5'-adenylyl sulfate (PAPS) as sulfonate donor to catalyze the sulfate conjugation of many hormones, neurotransmitters, drugs and xenobiotic compounds. Sulfonation increases the water solubility of most compounds, and therefore their renal excretion, but it can also result in bioactivation to form active metabolites. Sulfates hydroxysteroids like DHEA. Isoform 1 preferentially sulfonates cholesterol, and isoform 2 avidly sulfonates pregnenolone but not cholesterol.<ref>PMID:9799594</ref> <ref>PMID:12145317</ref> | |||
== 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/q1/1q1z_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=1q1z ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The gene for human hydroxysteroid sulfotransferase (SULT2B1) encodes two peptides, SULT2B1a and SULT2B1b, that differ only at their amino termini. SULT2B1b has a predilection for cholesterol but is also capable of sulfonating pregnenolone, whereas SULT2B1a preferentially sulfonates pregnenolone and only minimally sulfonates cholesterol. We have determined the crystal structure of SULT2B1a and SULT2B1b bound to the substrate donor product 3'-phosphoadenosine 5'-phosphate at 2.9 and 2.4 A, respectively, as well as SULT2B1b in the presence of the acceptor substrate pregnenolone at 2.3 A. These structures reveal a different catalytic binding orientation for the substrate from a previously determined structure of hydroxysteroid sulfotransferase (SULT2A1) binding dehydroepiandrosterone. In addition, the amino-terminal helix comprising residues Asp19 to Lys26, which determines the specificity difference between the SULT2B1 isoforms, becomes ordered upon pregnenolone binding, covering the substrate binding pocket. | |||
Crystal structure of human cholesterol sulfotransferase (SULT2B1b) in the presence of pregnenolone and 3'-phosphoadenosine 5'-phosphate. Rationale for specificity differences between prototypical SULT2A1 and the SULT2BG1 isoforms.,Lee KA, Fuda H, Lee YC, Negishi M, Strott CA, Pedersen LC J Biol Chem. 2003 Nov 7;278(45):44593-9. Epub 2003 Aug 14. PMID:12923182<ref>PMID:12923182</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 1q1z" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Sulfotransferase 3D structures|Sulfotransferase 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: Fuda | [[Category: Fuda H]] | ||
[[Category: Lee | [[Category: Lee KA]] | ||
[[Category: Lee | [[Category: Lee YC]] | ||
[[Category: Negishi | [[Category: Negishi M]] | ||
[[Category: Pedersen | [[Category: Pedersen LC]] | ||
[[Category: Strott | [[Category: Strott CA]] | ||
