5bnf: Difference between revisions
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==Apo structure of porcine CD38== | |||
<StructureSection load='5bnf' size='340' side='right' caption='[[5bnf]], [[Resolution|resolution]] 2.30Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[5bnf]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5BNF OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5BNF FirstGlance]. <br> | |||
</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[5bni|5bni]]</td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5bnf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5bnf OCA], [http://pdbe.org/5bnf PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5bnf RCSB], [http://www.ebi.ac.uk/pdbsum/5bnf PDBsum]</span></td></tr> | |||
</table> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Cyclic ADP-ribose (cADPR) mobilizes intracellular Ca(2+) stores and activates Ca(2+) influx to regulate a wide range of physiological processes. It is one of the products produced from the catalysis of NAD(+) by the multifunctional CD38/ADP-ribosyl cyclase superfamily. After elimination of the nicotinamide ring by the enzyme, the reaction intermediate of NAD(+) can either be hydrolyzed to form linear ADPR or cyclized to form cADPR. We have previously shown that human CD38 exhibits a higher preference towards the hydrolysis of NAD(+) to form linear ADPR while Aplysia ADP-ribosyl cyclase prefers cyclizing NAD(+) to form cADPR. In this study, we characterized the enzymatic properties of porcine CD38 and revealed that it has a prominent secondary NAD(+) cyclase activity producing cADPR. We also determined the X-ray crystallographic structures of porcine CD38 and were able to observe conformational flexibility at the base of the active site of the enzyme which allow the NAD(+) reaction intermediate to adopt conformations resulting in both hydrolysis and cyclization forming linear ADPR and cADPR respectively. | |||
Porcine CD38 exhibits prominent secondary NAD(+) cyclase activity.,Ting KY, Leung CF, Graeff RM, Lee HC, Hao Q, Kotaka M Protein Sci. 2016 Mar;25(3):650-61. doi: 10.1002/pro.2859. Epub 2016 Jan 12. PMID:26660500<ref>PMID:26660500</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
<div class="pdbe-citations 5bnf" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Graeff, R M]] | |||
[[Category: Hao, Q]] | [[Category: Hao, Q]] | ||
[[Category: Kotaka, M]] | [[Category: Kotaka, M]] | ||
[[Category: Lee, H. | [[Category: Lee, H C]] | ||
[[Category: Leung, C P.F]] | |||
[[Category: Ting, K Y]] | |||
[[Category: Adp-cyclase]] | |||
[[Category: Adp-hydrolase]] | |||
[[Category: Cadpr]] | |||
[[Category: Calcium signalling]] | |||
[[Category: Hydrolase]] | |||
Revision as of 01:53, 2 June 2016
Apo structure of porcine CD38Apo structure of porcine CD38
Structural highlights
Publication Abstract from PubMedCyclic ADP-ribose (cADPR) mobilizes intracellular Ca(2+) stores and activates Ca(2+) influx to regulate a wide range of physiological processes. It is one of the products produced from the catalysis of NAD(+) by the multifunctional CD38/ADP-ribosyl cyclase superfamily. After elimination of the nicotinamide ring by the enzyme, the reaction intermediate of NAD(+) can either be hydrolyzed to form linear ADPR or cyclized to form cADPR. We have previously shown that human CD38 exhibits a higher preference towards the hydrolysis of NAD(+) to form linear ADPR while Aplysia ADP-ribosyl cyclase prefers cyclizing NAD(+) to form cADPR. In this study, we characterized the enzymatic properties of porcine CD38 and revealed that it has a prominent secondary NAD(+) cyclase activity producing cADPR. We also determined the X-ray crystallographic structures of porcine CD38 and were able to observe conformational flexibility at the base of the active site of the enzyme which allow the NAD(+) reaction intermediate to adopt conformations resulting in both hydrolysis and cyclization forming linear ADPR and cADPR respectively. Porcine CD38 exhibits prominent secondary NAD(+) cyclase activity.,Ting KY, Leung CF, Graeff RM, Lee HC, Hao Q, Kotaka M Protein Sci. 2016 Mar;25(3):650-61. doi: 10.1002/pro.2859. Epub 2016 Jan 12. PMID:26660500[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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