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Localized induction of the ntcA regulatory gene in developing heterocysts of Anabaena sp. strain PCC 7120

 

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Opened Access Localized induction of the ntcA regulatory gene in developing heterocysts of Anabaena sp. strain PCC 7120
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Author: Olmedo Verd, Elvira
Muro Pastor, Alicia María
Flores García, Enrique
Herrero Moreno, Antonia
Department: Universidad de Sevilla. Departamento de Bioquímica Vegetal y Biología Molecular
Date: 2006
Published in: Journal of Bacteriology, 188 (18), 6694-6699.
Document type: Article
Abstract: The ntcA gene encodes an N-control transcriptional regulator in cyanobacteria. In the N2-fixing, heterocyst-forming cyanobacterium Anabaena sp. strain PCC 7120, ntcA is an autoregulatory gene that is transcribed from a complex promoter region that includes a constitutive promoter (P 2) and promoters that are induced upon N step-down (P1 and P3). Expression of ntcA was investigated with the use of an ntcA-gfp translational fusion, which was introduced both in the natural ntcA locus and in a heterologous genomic place. Induction of ntcA-gfp took place after N step-down in all the cells of the filament, but at especially high levels in developing heterocysts. Localized induction could be driven independently by P3 and P1.
Cite: Olmedo Verd, E., Muro Pastor, A.M., Flores García, E. y Herrero, A. (2006). Localized induction of the ntcA regulatory gene in developing heterocysts of Anabaena sp. strain PCC 7120. Journal of Bacteriology, 188 (18), 6694-6699.
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URI: http://hdl.handle.net/11441/62965

DOI: 10.1128/JB.00509-06

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