2w4x: Difference between revisions

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-[[Image:2w4x.png|left|200px]]
-{{STRUCTURE_2w4x|  PDB=2w4x  |  SCENE=  }}
+==BtGH84 in complex with STZ==
+<StructureSection load='2w4x' size='340' side='right'caption='[[2w4x]], [[Resolution|resolution]] 2.42&Aring;' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[2w4x]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacteroides_thetaiotaomicron_VPI-5482 Bacteroides thetaiotaomicron VPI-5482]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2W4X OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2W4X 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]] 2.42&#8491;</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=STZ:STREPTOZOTOCIN'>STZ</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=2w4x FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2w4x OCA], [https://pdbe.org/2w4x PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2w4x RCSB], [https://www.ebi.ac.uk/pdbsum/2w4x PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2w4x ProSAT]</span></td></tr>
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/OGA_BACTN OGA_BACTN] Biological function unknown. Capable of hydrolyzing the glycosidic link of O-GlcNAcylated proteins.
+== 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/w4/2w4x_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=2w4x ConSurf].
+<div style="clear:both"></div>
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+Despite decades of its use in diabetes research, the mechanism of cytotoxicity of streptozotocin (STZ) toward pancreatic beta-islet cells has remained a topic of discussion. Although STZ toxicity is likely a function of its capacity to promote DNA alkylation, it has been proposed that STZ induces pancreatic beta-cell death through O-GlcNAcase inhibition. In this report, we explore the binding mode of STZ to a close homolog of human O-GlcNAcase, BtGH84 from Bacteroides thetaiotaomicron. Our results show that STZ binds in the enzyme active site in its intact form, without the formation of a covalent adduct, consistent with solution studies on BtGH84 and human O-GlcNAcase, as well as with structural work on a homolog from Clostridium perfringens. The active site of the BtGH84 is considerably deformed upon STZ binding and as a result the catalytic machinery is expelled from the binding cavity.
-===BTGH84 IN COMPLEX WITH STZ===
+Structural insight into the mechanism of streptozotocin inhibition of O-GlcNAcase.,He Y, Martinez-Fleites C, Bubb A, Gloster TM, Davies GJ Carbohydr Res. 2009 Mar 31;344(5):627-31. Epub 2008 Dec 13. PMID:19217614<ref>PMID:19217614</ref>
-{{ABSTRACT_PUBMED_19217614}}
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
+</div>
-==About this Structure==
+<div class="pdbe-citations 2w4x" style="background-color:#fffaf0;"></div>
-[[2w4x]] is a 1 chain structure of [[Beta-Hexosaminidase]] with sequence from [http://en.wikipedia.org/wiki/Bacteroides_thetaiotaomicron Bacteroides thetaiotaomicron]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2W4X OCA].
 ==See Also==
 *[[Beta-Hexosaminidase|Beta-Hexosaminidase]]
+*[[Beta-Hexosaminidase 3D structures|Beta-Hexosaminidase 3D structures]]
-==Reference==
+*[[O-GlcNAcase|O-GlcNAcase]]
-<ref group="xtra">PMID:019217614</ref><references group="xtra"/>
+== References ==
-[[Category: Bacteroides thetaiotaomicron]]
+<references/>
-[[Category: Beta-N-acetylhexosaminidase]]
+__TOC__
-[[Category: Bubb, A.]]
+</StructureSection>
-[[Category: Davies, G J.]]
+[[Category: Bacteroides thetaiotaomicron VPI-5482]]
-[[Category: He, Y.]]
+[[Category: Large Structures]]
-[[Category: Martinez-Fleites, C.]]
+[[Category: Bubb A]]
-[[Category: Complex]]
+[[Category: Davies GJ]]
-[[Category: Glycosidase]]
+[[Category: He Y]]
-[[Category: Glycoside hydrolase]]
+[[Category: Martinez-Fleites C]]
-[[Category: Hydrolase]]
-[[Category: Inhibitor]]