RESUMO

The physiological role of the membrane-bound pyrophosphatase of Rhodospirillum rubrum was investigated by the characterization of a mutant strain. Comparisons of growth levels between the wild type and the mutant under different low-potential conditions and during transitions between different metabolisms indicate that this enzyme provides R. rubrum with an alternative energy source that is important for growth in low-energy states.

Assuntos

Pirofosfatase Inorgânica/fisiologia , Rhodospirillum rubrum/enzimologia , Trifosfato de Adenosina/metabolismo , Aerobiose , Metabolismo Energético , Luz , Fotossíntese , Rhodospirillum rubrum/crescimento & desenvolvimento