Results 41 to 50 of about 4,703 (162)
Structural and mechanistic basis for the regulation of the chloroplast signal recognition particle by (p)ppGpp. [PDF]
FEBS LettLHCPs are transported to the thylakoid membrane via the (cp)SRP pathway. This process involves a transit complex of (cp)SRP43, (cp)SRP54 and LHCP, which interacts with (cp)FtsY and Alb3 at the membrane. GTP hydrolysis by (cp)SRP54 and (cp)FtsY triggers complex dissociation.
Zegarra V +7 more
europepmc +2 more sources
Control of rRNA and tRNA syntheses in Escherichia coli by guanosine tetraphosphate [PDF]
Journal of Bacteriology, 1982 The expression of stable RNA (rRNA and tRNA) genes and the concentration of guanosine tetraphosphate (ppGpp) were measured in an isogenic pair of relA+ and relA derivatives of Escherichia coli B/r. The cells were either growing exponentially at different rates or subject to amino acid starvation when they were measured.
J, Ryals, R, Little, H, Bremer
openaire +2 more sources
The Borrelia burgdorferi RelA/SpoT Homolog and Stringent Response Regulate Survival in the Tick Vector and Global Gene Expression during Starvation. [PDF]
PLoS Pathogens, 2015 As the Lyme disease bacterium Borrelia burgdorferi traverses its enzootic cycle, alternating between a tick vector and a vertebrate host, the spirochete must adapt and persist in the tick midgut under prolonged nutrient stress between blood meals.
Dan Drecktrah +5 more
doaj +1 more source
Frontiers in Microbiology, 2021 Guanosine penta- or tetraphosphate (known as (p)ppGpp) serves as second messenger to respond to nutrient downshift and other environmental stresses, a phenomenon called stringent response.
Laura Meyer +2 more
doaj +1 more source
Regulation of Phospholipid Synthesis in Escherichia coli by Guanosine Tetraphosphate [PDF]
Journal of Bacteriology, 1973 Phospholipid synthesis has been reported to be subject to stringent control in Escherichia coli . We present evidence that demonstrates a strict correlation between guanosine tetraphosphate accumulation and inhibition of phospholipid synthesis.
J P, Merlie, L I, Pizer
openaire +2 more sources
Bio-Protocol, 2016 The stringent response in bacteria is a stress response that is mediated by the signaling molecules guanosine tetraphosphate and pentaphosphate [(p)ppGpp], alarmones that are also directly related to virulence. Therefore, determination of (p)ppGpp levels
Smitha Sivapragasam, Anne Grove
doaj +1 more source
npj Systems Biology and Applications, 2022 Growth and environmental responses are essential for living organisms to survive and adapt to constantly changing environments. In order to simulate new conditions and capture dynamic responses to environmental shifts in a developing whole-cell model of ...
Travis A. Ahn-Horst +4 more
doaj +1 more source
SpoT Induces Intracellular
mBio, 2020 Guanosine tetraphosphate (ppGpp) and guanosine pentaphosphate (pppGpp), together named (p)ppGpp, regulate diverse aspects of Salmonella pathogenesis, including synthesis of nutrients, resistance to inflammatory mediators, and expression of secretion ...
Liam F. Fitzsimmons +8 more
doaj +1 more source
Communications Biology, 2023 The cyanobacterium Synechococcus elongatus PCC 7942 accumulates alarmone guanosine tetraphosphate (ppGpp) under stress conditions, such as darkness. A previous study observed that artificial ppGpp accumulation under photosynthetic conditions led to the ...
Ryota Hidese +8 more
doaj +1 more source
Effects of Guanosine Tetraphosphate, Guanosine Pentaphosphate, and β-γ Methylenyl-Guanosine Pentaphosphate on Gene Expression of Escherichia coli In Vitro [PDF]
Proceedings of the National Academy of Sciences, 1974 The effects of guanosine tetraphosphate (ppGpp) and guanosine pentaphosphate (pppGpp), both produced by E. coli , were measured on the activities of several genes in a cell-free system. Gene activity is measured as gene-directed synthesis of biochemically competent protein or transfer RNA ...
H L, Yang +4 more
openaire +2 more sources