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dc.contributor.authorPernil, Rafael-
dc.contributor.authorPicossi, Silvia-
dc.contributor.authorHerrero, Antonia-
dc.contributor.authorFlores, Enrique-
dc.contributor.authorMariscal, Vicente-
dc.date.accessioned2015-06-25T06:55:16Z-
dc.date.available2015-06-25T06:55:16Z-
dc.date.issued2015-
dc.identifier.citationLife 5(2): 1282-1300 (2015)es_ES
dc.identifier.urihttp://hdl.handle.net/10261/117106-
dc.description.abstractAnabaena sp. strain PCC 7120 is a filamentous cyanobacterium that can use inorganic compounds such as nitrate or ammonium as nitrogen sources. In the absence of combined nitrogen, it can fix N2 in differentiated cells called heterocysts. Anabaena also shows substantial activities of amino acid uptake, and three ABC-type transporters for amino acids have been previously characterized. Seven new loci encoding predicted amino acid transporters were identified in the Anabaena genomic sequence and inactivated. Two of them were involved in amino acid uptake. Locus alr2535-alr2541 encodes the elements of a hydrophobic amino acid ABC-type transporter that is mainly involved in the uptake of glycine. ORF all0342 encodes a putative transporter from the dicarboxylate/amino acid:cation symporter (DAACS) family whose inactivation resulted in an increased uptake of a broad range of amino acids. An assay to study amino acid release from Anabaena filaments to the external medium was set up. Net release of the alanine analogue α-aminoisobutyric acid (AIB) was observed when transport system N-I (a hydrophobic amino acid ABC-type transporter) was engaged in the uptake of a specific substrate. The rate of AIB release was directly proportional to the intracellular AIB concentration, suggesting leakage from the cells by diffusiones_ES
dc.description.sponsorshipThis work was supported by the Plan Nacional de Investigación, Spain, co-financed by the European Regional Development Fund (grants BFU2005-07672, BFU2008-03811, and BFU2011-22762). We acknowledge support by the CSIC Open Access Publication Initiative through its Unit of Information Resources for Research (URICI).-
dc.language.isoenges_ES
dc.publisherMultidisciplinary Digital Publishing Institutees_ES
dc.relation.isversionofPublisher's versiones_ES
dc.rightsopenAccess-
dc.subjectABC-type transporterses_ES
dc.subjectAmino acid diffusiones_ES
dc.subjectCyanobacteriaes_ES
dc.subjectMembrane transportes_ES
dc.titleAmino acid transporters and release of hydrophobic amino acids in the heterocyst-forming cyanobacterium anabaena sp. strain PCC 7120es_ES
dc.typeartículo-
dc.identifier.doi10.3390/life5021282-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttp://dx.doi.org/10.3390/life5021282es_ES
dc.identifier.e-issn2075-1729-
dc.rights.licensehttp://creativecommons.org/licenses/by/4.0/-
dc.contributor.funderConsejo Superior de Investigaciones Científicas (España)-
dc.contributor.funderEuropean Commission-
dc.contributor.funderMinisterio de Educación y Ciencia (España)-
dc.contributor.funderMinisterio de Ciencia e Innovación (España)-
dc.contributor.funderMinisterio de Economía y Competitividad (España)-
dc.relation.csices_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100003339es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100000780es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100004837es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100003329es_ES
dc.identifier.pmid25915115-
dc.type.coarhttp://purl.org/coar/resource_type/c_6501es_ES
item.openairetypeartículo-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextopen-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
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