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dc.contributor.author | Günther Sillero, María A. | - |
dc.contributor.author | Diego, Anabel de | - |
dc.contributor.author | Silles, Eduardo | - |
dc.contributor.author | Sillero, Antonio | - |
dc.date.accessioned | 2013-08-30T09:21:50Z | - |
dc.date.available | 2013-08-30T09:21:50Z | - |
dc.date.issued | 2005 | - |
dc.identifier | doi: 10.1016/j.febslet.2005.10.003 | - |
dc.identifier | issn: 0014-5793 | - |
dc.identifier | e-issn: 1873-3468 | - |
dc.identifier.citation | FEBS Letters 579(27): 6223-6229 (2005) | - |
dc.identifier.uri | http://hdl.handle.net/10261/81170 | - |
dc.description | Open Access. | - |
dc.description.abstract | Previous work from this laboratory had shown that ligases may catalyze the synthesis of (di)nucleoside polyphosphates. Here, we show that one of the enzymes of the proteasome system (E1 or the ubiquitin (Ub) activating enzyme, EC 6.3.2.19) catalyzes very effectively (kcat = 0.29 ± 0.05 s-1) the transfer of AMP from the E-AMP-ubiquitin complex to tripolyphosphate or tetrapolyphosphate with formation of adenosine tetra- or pentaphosphate (p4A or p5A), respectively. Whereas the concomitant formation of AMP is stimulated by the presence of dithiothreitol in a concentration dependent manner, the synthesis of p4A is only slightly inhibited by this compound. Previous treatment of the enzyme (E1) with iodoacetamide inhibited only partially the synthesis of p4A. p 4A can substitute for ATP as substrate of the reaction to generate the ubiquityl adenylate complex. A small amount of diadenosine pentaphosphate (Ap5A) was also synthesized in the presence of p4A. © 2005 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved. | - |
dc.description.sponsorship | This investigation was supported by grants from Dirección General de Investigación Científica y Técnica (BMC-2002-00866) and Instituto de Salud Carlos III, RMN (C03/08). | - |
dc.language.iso | eng | - |
dc.publisher | Elsevier | - |
dc.rights | openAccess | - |
dc.title | Synthesis of (di)nucleoside polyphosphates by the ubiquitin activating enzyme E1 | - |
dc.type | artículo | - |
dc.identifier.doi | 10.1016/j.febslet.2005.10.003 | - |
dc.relation.publisherversion | http://dx.doi.org/10.1016/j.febslet.2005.10.003 | - |
dc.date.updated | 2013-08-30T09:21:50Z | - |
dc.description.version | Peer Reviewed | - |
dc.identifier.pmid | 16256113 | - |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.cerifentitytype | Publications | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.grantfulltext | open | - |
item.openairetype | artículo | - |
item.fulltext | With Fulltext | - |
item.languageiso639-1 | en | - |
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Synthesis of di.pdf | 296,72 kB | Adobe PDF | Visualizar/Abrir |
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