dc.creator | Mitschke, Jan | es |
dc.creator | Vioque Peña, Agustín | es |
dc.creator | Haas, Fabian | es |
dc.creator | Hess, Wolfgang R. | es |
dc.creator | Muro Pastor, Alicia María | es |
dc.date.accessioned | 2017-12-27T16:59:56Z | |
dc.date.available | 2017-12-27T16:59:56Z | |
dc.date.issued | 2011 | |
dc.identifier.citation | Mitschke, J., Vioque Peña, A., Haas, F., Hess, W.R. y Muro Pastor, A.M. (2011). Dynamics of transcriptional start site selection during nitrogen stress-induced cell differentiation in Anabaena sp. PCC7120. Proceedings of the National Academy of Sciences of the United States of America, 108, 20130-20135. | |
dc.identifier.issn | 0027-8424 (impreso) | es |
dc.identifier.uri | http://hdl.handle.net/11441/68025 | |
dc.description.abstract | The fixation of atmospheric N2 by cyanobacteria is a major source of nitrogen in the biosphere. In Nostocales, such as Anabaena, this process is spatially separated from oxygenic photosynthesis and occurs in heterocysts. Upon nitrogen step-down, these specialized cells differentiate from vegetative cells in a process controlled by two major regulators: NtcA and HetR. However, the regulon controlled by these two factors is only partially defined, and several aspects of the differentiation process have remained enigmatic. Using differential RNA-seq, we experimentally define a genomewide map of >10,000 transcriptional start sites (TSS) of Anabaena sp. PCC7120, a model organism for the study of prokaryotic cell differentiation and N 2 fixation. By analyzing the adaptation to nitrogen stress, our global TSS map provides insight into the dynamic changes that modify the transcriptional organization at a critical step of the differentiation process. We identify >900 TSS with minimum fold change in response to nitrogen deficiency of eight. From these TSS, at least 209 were under control of HetR, whereas at least 158 other TSS were potentially directly controlled by NtcA. Our analysis of the promoters activated during the switch to N2 fixation adds hundreds of protein-coding genes and noncoding transcripts to the list of potentially involved factors. These data experimentally define the NtcA regulon and the DIF+ motif, a palindrome at or close to position -35 that seems essential for heterocyst-specific expression of certain genes. | es |
dc.description.sponsorship | Fundación Alemana de Investigación Científica SPP1258 | es |
dc.description.sponsorship | German Federal Ministry of Education and Research 0313921 | es |
dc.description.sponsorship | Ministerio de Ciencia e Innovación BFU2007-60651, BFU2010-14821 | es |
dc.description.sponsorship | European Regional Development Fund | es |
dc.format | application/pdf | es |
dc.language.iso | eng | es |
dc.publisher | National Academy of Sciences (U.S.) | es |
dc.relation.ispartof | Proceedings of the National Academy of Sciences of the United States of America, 108, 20130-20135. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Prokaryotic cell differentiation | es |
dc.subject | Antisense transcription | es |
dc.subject | Heterocyst | es |
dc.subject | Nitrogen fixation | es |
dc.subject | Differential RNA-seq | es |
dc.title | Dynamics of transcriptional start site selection during nitrogen stress-induced cell differentiation in Anabaena sp. PCC7120 | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/acceptedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Bioquímica Vegetal y Biología Molecular | es |
dc.relation.projectID | SPP1258 | es |
dc.relation.projectID | 0313921 | es |
dc.relation.projectID | BFU2007-60651 | es |
dc.relation.projectID | BFU2010-14821 | es |
dc.relation.publisherversion | http://dx.doi.org/10.1073/pnas.1112724108 | es |
dc.identifier.doi | 10.1073/pnas.1112724108 | es |
idus.format.extent | 30 p. | es |
dc.journaltitle | Proceedings of the National Academy of Sciences of the United States of America | es |
dc.publication.volumen | 108 | es |
dc.publication.initialPage | 20130 | es |
dc.publication.endPage | 20135 | es |
dc.identifier.sisius | 20027040 | es |