Stringency in the absence of ppGpp accumulation in Rhodobacter sphaeroides.

AUTOR(ES)

Acosta, R

RESUMO

Leucine deprivation of either phototrophically or chemotrophically growing cells of Rhodobacter sphaeroides resulted in a restriction in the continued accumulations of cellular RNA, phospholipids, and protein. Phototrophically growing cells also displayed restrictions in the accumulations of cellular carotenoids and bacteriochlorophyll. Leucine deprivation, however, did not provoke the accumulation of cellular ppGpp or alter the steady-state levels of ppGpp, ATP, or GTP in cells of R. sphaeroides.

Documentos Relacionados

• Regulation of σ factor competition by the alarmone ppGpp
• Simple downshift and resulting lack of correlation between ppGpp pool size and ribonucleic acid accumulation.
• Occurrence of the regulatory nucleotides ppGpp and pppGpp following induction of the stringent response in staphylococci.
• Osmoregulation in Rhodobacter sphaeroides.
• Role of ppGpp in rpoS Stationary-Phase Regulation in Escherichia coli