3ofs: Difference between revisions

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[[Image:3ofs.png|left|200px]]


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==Dynamic conformations of the CD38-mediated NAD cyclization captured using multi-copy crystallography==
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<StructureSection load='3ofs' size='340' side='right'caption='[[3ofs]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
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== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[3ofs]] is a 6 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=3OFS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3OFS 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]] 2.2&#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=AVU:[(2R,3S,4R,5R)-5-(6-AMINO-9H-PURIN-9-YL)-3,4-DIHYDROXYTETRAHYDROFURAN-2-YL]METHYL+[(2R,3R,4R)-4-FLUORO-3-HYDROXYTETRAHYDROFURAN-2-YL]METHYL+DIHYDROGEN+DIPHOSPHATE'>AVU</scene></td></tr>
{{STRUCTURE_3ofs|  PDB=3ofs  |  SCENE= }}
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3ofs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ofs OCA], [https://pdbe.org/3ofs PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3ofs RCSB], [https://www.ebi.ac.uk/pdbsum/3ofs PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3ofs ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/CD38_HUMAN CD38_HUMAN] Synthesizes cyclic ADP-ribose, a second messenger for glucose-induced insulin secretion. Also has cADPr hydrolase activity. Also moonlights as a receptor in cells of the immune system.
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== Publication Abstract from PubMed ==
The extracellular domain of human CD38 is a multifunctional enzyme involved in the metabolism of two Ca(2+) messengers: cyclic ADP-ribose and nicotinic acid adenine dinucleotide phosphate. When NAD is used as substrate, CD38 predominantly hydrolyzes it to ADP-ribose, with a trace amount of cyclic ADP-ribose produced through cyclization of the substrate. However, mutation of a key residue at the active site, E146, inhibits the hydrolysis activity of CD38 but greatly increases its cyclization activity. To understand the role of the residue E146 in the catalytic process, we determined the crystal structure of the E146A mutant protein with a substrate analogue, arabinosyl-2'-fluoro-deoxy-nicotinamide adenine dinucleotide. The structure captured the enzymatic reaction intermediates in six different conformations in a crystallographic asymmetric unit. The structural results indicate a folding-back process for the adenine ring of the substrate and provide the first multiple snapshots of the process. Our approach of utilizing multiple molecules in the crystallographic asymmetric unit should be generally applicable for capturing the dynamic nature of enzymatic catalysis.


===Dynamic conformations of the CD38-mediated NAD cyclization captured using multi-copy crystallography===
Dynamic Conformations of the CD38-Mediated NAD Cyclization Captured in a Single Crystal.,Zhang H, Graeff R, Chen Z, Zhang L, Zhang L, Lee H, Hao Q J Mol Biol. 2011 Jan 28;405(4):1070-8. Epub 2010 Dec 8. PMID:21134381<ref>PMID:21134381</ref>


From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 3ofs" style="background-color:#fffaf0;"></div>


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==See Also==
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*[[Cluster of Differentiation CD38|Cluster of Differentiation CD38]]
(as it appears on PubMed at http://www.pubmed.gov), where 21134381 is the PubMed ID number.
== References ==
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<references/>
{{ABSTRACT_PUBMED_21134381}}
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</StructureSection>
==About this Structure==
[[3ofs]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3OFS OCA].
 
==Reference==
<ref group="xtra">PMID:21134381</ref><references group="xtra"/>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Hao, Q.]]
[[Category: Large Structures]]
[[Category: Lee, H C.]]
[[Category: Hao Q]]
[[Category: Zhang, H.]]
[[Category: Lee HC]]
[[Category: Zhang H]]

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