PpsR : a multifaceted regulator of photosynthesis gene expression in purple bacteria - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Molecular Microbiology Année : 2005

PpsR : a multifaceted regulator of photosynthesis gene expression in purple bacteria

Résumé

Purple bacteria control the level of expression and the composition of their photosystem according to light and redox conditions. This control involves several regulatory systems that have been now well characterized. Among them, the PpsR regulator plays a central role, because it directly or indirectly controls the synthesis of all of the different components of the photosystem. In this review, we report our knowledge of the PpsR protein, highlighting the diversity of its mode of action and focusing on the proteins identified in four model purple bacteria (Rhodobacter capsulatus, Rhodobacter sphaeroides, Rubrivivax gelatinosus, Bradyrhizobium ORS278). This regulator exhibits unique regulatory features in each bacterium: it can activate and/or repress the expression of photosynthesis genes, its activity can be modulated or not by the redox conditions, it can interact with other specific regulators and therefore be involved differently in light and/or redox regulatory circuits.

Dates et versions

hal-00378756 , version 1 (26-04-2009)

Identifiants

Citer

Sylvie Elsen, Marianne Jaubert, David Pignol, Eric Giraud. PpsR : a multifaceted regulator of photosynthesis gene expression in purple bacteria. Molecular Microbiology, 2005, 57 (1), pp.17-26. ⟨10.1111/j.1365-2958.2005.04655.x⟩. ⟨hal-00378756⟩
215 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More