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dc.contributor.authorMonroig, Óscar-
dc.contributor.authorde Llanos, Rosa-
dc.contributor.authorVaró, Inmaculada-
dc.contributor.authorHontoria, Francisco-
dc.contributor.authorTocher, Douglas R.-
dc.contributor.authorPuig, Sergi-
dc.contributor.authorNavarro, Juan Carlos-
dc.identifier.citationMarine Drugs 15(3): 82 (2017)-
dc.description.abstractPolyunsaturated fatty acids (PUFAs) have been acknowledged as essential nutrients for cephalopods but the specific PUFAs that satisfy the physiological requirements are unknown. To expand our previous investigations on characterisation of desaturases and elongases involved in the biosynthesis of PUFAs and hence determine the dietary PUFA requirements in cephalopods, this study aimed to investigate the roles that a stearoyl-CoA desaturase (Scd) and an elongation of very long-chain fatty acid 4 (Elovl4) protein play in the biosynthesis of essential fatty acids (FAs). Our results confirmed the <i>Octopus vulgaris</i> Scd is a ∆9 desaturase with relatively high affinity towards saturated FAs with ≥ C<sub>18</sub> chain lengths. Scd was unable to desaturate 20:1<i>n-</i>15 (<sup>∆5</sup>20:1) suggesting that its role in the biosynthesis of non-methylene interrupted FAs (NMI FAs) is limited to the introduction of the first unsaturation at ∆9 position. Interestingly, the previously characterised ∆5 fatty acyl desaturase was indeed able to convert 20:1<i>n-</i>9 (<sup>∆11</sup>20:1) to <sup>∆5,11</sup>20:2, an NMI FA previously detected in octopus nephridium. Additionally, Elovl4 was able to mediate the production of 24:5<i>n-</i>3 and thus can contribute to docosahexaenoic acid (DHA) biosynthesis through the Sprecher pathway. Moreover, the octopus Elovl4 was confirmed to play a key role in the biosynthesis of very long-chain (>C<sub>24</sub>) PUFAs.-
dc.description.sponsorshipThis research and OM were supported by a Marie Curie Reintegration Grant within the 7th European Community Framework Programme (PERG08-GA-2010-276916, LONGFA), with additional support from “Ministerio de Ciencia e Innovación” through the OCTOPHYS Project (AGL-2010-22120-C03-02) and a Juan de la Cierva postdoctoral contract to OM. Further support was obtained from the Generalitat Valenciana through grants within the PROMETEO (2010/006), “Grupos Emergentes” (GV/2013/123) programes, and AGL2011-29099 and BIO2014-56298-P grants from the Spanish Ministry of Economy and Competitiveness. R.D.L. was supported by a postdoctoral JAE-Doc contract from the Spanish Research Council (CSIC) and the European Social Fund.-
dc.description.sponsorshipWe acknowledge support by the CSIC Open Access Publication Initiative through its Unit of Information Resources for Research (URICI).-
dc.publisherMultidisciplinary Digital Publishing Institute-
dc.relation.isversionofPublisher's versión-
dc.titleBiosynthesis of Polyunsaturated Fatty Acids in Octopus vulgaris: Molecular Cloning and Functional Characterisation of a Stearoyl-CoA Desaturase and an Elongation of Very Long-Chain Fatty Acid 4 Protein-
dc.contributor.funderConsejo Superior de Investigaciones Científicas (España)-
dc.contributor.funderMinisterio de Economía y Competitividad (España)-
dc.contributor.funderMinisterio de Ciencia e Innovación (España)-
dc.contributor.funderEuropean Commission-
dc.contributor.funderGeneralitat Valenciana-
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