6bpx: Difference between revisions

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OCA

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-'''Unreleased structure'''
-The entry 6bpx is ON HOLD
+==Crystal structure of cysteine-bound ferrous form of the matured Cl2-Tyr157 human cysteine dioxygenase==
+<StructureSection load='6bpx' size='340' side='right'caption='[[6bpx]], [[Resolution|resolution]] 2.15&Aring;' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[6bpx]] 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=6BPX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6BPX 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]] 2.15&#8491;</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=2LT:3,5-DICHLORO-L-TYROSINE'>2LT</scene>, <scene name='pdbligand=CYS:CYSTEINE'>CYS</scene>, <scene name='pdbligand=FE2:FE+(II)+ION'>FE2</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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=6bpx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6bpx OCA], [https://pdbe.org/6bpx PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6bpx RCSB], [https://www.ebi.ac.uk/pdbsum/6bpx PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6bpx ProSAT]</span></td></tr>
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/CDO1_HUMAN CDO1_HUMAN] Initiates several important metabolic pathways related to pyruvate and several sulfurate compounds including sulfate, hypotaurine and taurine. Critical regulator of cellular cysteine concentrations. Has an important role in maintaining the hepatic concentation of intracellular free cysteine within a proper narrow range.
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+Cysteine dioxygenase (CDO) plays an essential role in sulfur metabolism by regulating homeostatic levels of cysteine. Human CDO contains a post-translationally generated Cys93-Tyr157 cross-linked cofactor. Here, we investigated this Cys-Tyr cross-linking by incorporating unnatural tyrosines in place of Tyr157 via a genetic method. The catalytically active variants were obtained with a thioether bond between Cys93 and the halogen-substituted Tyr157, and we determined the crystal structures of both wild-type and engineered CDO variants in the purely uncross-linked form and with a mature cofactor. Along with mass spectrometry and (19)F NMR, these data indicated that the enzyme could catalyze oxidative C-F or C-Cl bond cleavage, resulting in a substantial conformational change of both Cys93 and Tyr157 during cofactor assembly. These findings provide insights into the mechanism of Cys-Tyr cofactor biogenesis and may aid the development of bioinspired aromatic carbon-halogen bond activation.
-Authors: Liu, A., Li, J., Shin, I.
+Cleavage of a carbon-fluorine bond by an engineered cysteine dioxygenase.,Li J, Griffith WP, Davis I, Shin I, Wang J, Li F, Wang Y, Wherritt DJ, Liu A Nat Chem Biol. 2018 Jun 25. pii: 10.1038/s41589-018-0085-5. doi:, 10.1038/s41589-018-0085-5. PMID:29942080<ref>PMID:29942080</ref>
-Description: Crystal structure of cysteine-bound ferrous form of the matured Cl2-Tyr157 human cysteine dioxygenase
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-[[Category: Unreleased Structures]]
+</div>
-[[Category: Li, J]]
+<div class="pdbe-citations 6bpx" style="background-color:#fffaf0;"></div>
-[[Category: Shin, I]]
-[[Category: Liu, A]]
+==See Also==
+*[[Dioxygenase 3D structures|Dioxygenase 3D structures]]
+== References ==
+<references/>
+__TOC__
+</StructureSection>
+[[Category: Homo sapiens]]
+[[Category: Large Structures]]
+[[Category: Li J]]
+[[Category: Liu A]]
+[[Category: Shin I]]