Abstract:Bacterial ribosome hibernation factors sequester ribosomes in an inactive state during the stationary phase and in response to stress. The cyanobacterial ribosome hibernation factor LrtA has been suggested to inactivate ribosomes in the dark and to be important for post-stress survival. In this study, we addressed the hypothesis that Plastid Specific Ribosomal Protein 1 (PSRP1), the chloroplast-localized LrtA homolog in plants, contributes to the global repression of chloroplast translation that occurs when pl… Show more
“…3c ) that can trigger the formation of inactive 70S monomers (Sharma et al ., 2010 ). However, the physiological function of PSRP1 is not yet elucidated (Swift et al ., 2020 ), and it is unlikely to be transcriptionally regulated by (p)ppGpp as it is encoded on the nuclear genome. The ribosome‐associated GTPase high frequency of lysogeny X (HflX) is also implicated in ribosome inactivation in bacteria.…”
Section: Molecular Mechanisms Of (P)
Ppgpp
Signall...mentioning
Tansley reviewNew perspectives on the molecular mechanisms of stress signalling by the nucleotide guanosine tetraphosphate (ppGpp), an emerging regulator of photosynthesis in plants and algae.
“…3c ) that can trigger the formation of inactive 70S monomers (Sharma et al ., 2010 ). However, the physiological function of PSRP1 is not yet elucidated (Swift et al ., 2020 ), and it is unlikely to be transcriptionally regulated by (p)ppGpp as it is encoded on the nuclear genome. The ribosome‐associated GTPase high frequency of lysogeny X (HflX) is also implicated in ribosome inactivation in bacteria.…”
Section: Molecular Mechanisms Of (P)
Ppgpp
Signall...mentioning
Tansley reviewNew perspectives on the molecular mechanisms of stress signalling by the nucleotide guanosine tetraphosphate (ppGpp), an emerging regulator of photosynthesis in plants and algae.
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