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The LysR-type transcription factor PacR is a global regulator of photosynthetic carbon assimilation in Anabaena

Opened Access The LysR-type transcription factor PacR is a global regulator of photosynthetic carbon assimilation in Anabaena

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Autor: Picossi, Silvia
Flores, Enrique
Herrero, Antonia
Fecha: 2015
Publicado en: Environmental Microbiology, 17, 3341-3351.
Tipo de documento: Artículo
Resumen: Cyanobacteria perform water-splitting photosynthesis and are important primary producers impacting the carbon and nitrogen cycles at global scale. They fix CO2 through ribulose-bisphosphate carboxylase/oxygenase (RuBisCo) and have evolved a distinct CO2 concentrating mechanism (CCM) that builds high CO2 concentrations in the vicinity of RuBisCo favouring its carboxylase activity. Filamentous cyanobacteria such as Anabaena fix CO2 in photosynthetic vegetative cells, which donate photosynthate to heterocysts that rely on a heterotrophic metabolism to fix N2. CCM elements are induced in response to inorganic carbon limitation, a cue that exposes the photosynthetic apparatus to photodamage by over-reduction. An Anabaena mutant lacking the LysR-type transcription factor All3953 grew poorly and dies under high light. The rbcL operon encoding RuBisCo was induced upon carbon limitation in the wild type but not in the mutant. ChIP-Seq analysis was used to globally identify All3953 targets unde...
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Cita: Picossi, S., Flores, E. y Herrero, A. (2015). The LysR-type transcription factor PacR is a global regulator of photosynthetic carbon assimilation in Anabaena. Environmental Microbiology, 17, 3341-3351.
Tamaño: 849.2Kb
Formato: PDF

URI: http://hdl.handle.net/11441/65650

DOI: 10.1111/1462-2920.12800

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