Importance of Rhodospirillum rubrum H(+)-pyrophosphatase under low-energy conditions.
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.
García-Contreras
Rodolfo
R
Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, México, D.F., Mexico.
Celis
Heliodoro
H
Romero
Irma
I
D000255:Adenosine Triphosphate / Q000378:metabolism; D000332:Aerobiosis; D004734:Energy Metabolism; D043564:Inorganic Pyrophosphatase / Q000502:physiology*; D008027:Light; D010788:Photosynthesis; D012247:Rhodospirillum rubrum / Q000201:enzymology* / Q000254:growth & development
D000255:Adenosine Triphosphate; D043564:Inorganic Pyrophosphatase