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Kuniyoshi, T. M., Gonzalez, A., Lopez-Gomollon, S., Valladares, A., Bes, M. T., Fillat, M. F., & Peleato, M. L. (2011, November 2). 2-oxoglutarate enhances NtcA binding activity to promoter regions of the microcystin synthesis gene cluster. FEBS Letters. Wiley. http://doi.org/10.1016/j.febslet.2011.10.034 |
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| Título: | 2-oxoglutarate enhances NtcA binding activity to promoter regions of the microcystin synthesis gene cluster |
Autor: | Kuniyoshi, T.M.; Gonzalez, A.; López-Gomollón, Sara CSIC ORCID; Valladares, Ana CSIC ORCID; Bes, M.T.; Fillat, María F.; Peleato, M.L. | Fecha de publicación: | 2011 | Editor: | Elsevier | Citación: | FEBS Letters 585: 3921- 3926 (2011) | Resumen: | The binding affinity of NtcA towards promoter regions of the microcystin gene cluster from Microcystis aeruginosa PCC 7806 has been analyzed by band-shift assay (EMSA). The key nitrogen transcriptional regulator exhibits affinity for two fragments of the bidirectional mcyDA promoter, as well as for promoter regions of mcyE and mcyH. The presence of 2-oxoglutarate increased by 2.5 fold the affinity of NtcA for the mcyA promoter region. The 2-oxoglutarate effect peaked at 0.8 mM, a physiological concentration for this compound under nitrogen-limiting conditions. The results suggest that the 2-oxoglutarate level, as a signal of the C to N balance of the cells, regulates the microcystin gene cluster. © 2011 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved. | URI: | http://hdl.handle.net/10261/59488 | DOI: | 10.1016/j.febslet.2011.10.034 | Identificadores: | doi: 10.1016/j.febslet.2011.10.034 issn: 0014-5793 |
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