Results 101 to 110 of about 46,501 (205)

The excitation cascade of Limulus ventral photoreceptors: guanylate cyclase as the link between InsP₃-mediated Ca²⁺ release and the opening of cGMP-gated channels

BMC Neuroscience, 2004
Background Early stages in the excitation cascade of Limulus photoreceptors are mediated by activation of Gq by rhodopsin, generation of inositol-1,4,5-trisphosphate by phospholipase-C and the release of Ca2+.
Lisman John E, Richard Edwin A, Garger Alexander V   +2 more
doaj   +1 more source

Ribosomal dormancy at the nexus of ribosome homeostasis and protein synthesis

BioEssays, Volume 46, Issue 7, July 2024.
Both prokaryotes and eukaryotes possess multiple forms of dormant ribosomes under unfavorable conditions. Dormancy factors act as translation repressors by occupying functionally crucial ribosomal sites. Dormancy factors protect the ribosomes from the degradation pathways.
Saloni Koli, Sunil Shetty
wiley   +1 more source

Regulation of Bacteriophage λ Development by Guanosine 5′-Diphosphate-3′-diphosphate

, 1999
On infection of its host, Escherichia coli, bacteriophage λ can follow one of two alternative developmental pathways: lytic or lysogenic. Here we demonstrate that the “lysis-versus-lysogenization” decision is influenced by guanosine tetraphosphate (ppGpp)
Neubauer, Peter, Słomińska, Monika, Węgrzyn, Grzegorz   +2 more
core   +1 more source

Post-translational regulation of photosynthetic activity via the TOR kinase in plants

, 2023
International audienceChloroplasts are the powerhouse of the plant cell, yet they are resource-intensive and will cause photooxidative damage if their activity overshoots the demands of growth.
Forzani, Céline, Montané, Marie-Hélène, Field, Ben, Velay, Florent, Romand, Shanna, Menand, Benoît, D’alessandro, Stefano, Meyer, Christian, Citerne, Sylvie, Mehrez, Marwa, Saadouni, Rim, Robaglia, Christophe   +11 more
core   +1 more source

Elucidation of the role of guanosine tetraphosphate (ppGpp) in the acclimation of plants to stress

, 2023
La guanosine tetraphosphate ou ppGpp a été initialement découverte chez la bactérie Escherichia coli. Il s'agit de la molécule clé qui permet la régulation de la croissance et promeut l'acclimatation au stress des procaryotes.
Romand, Shanna
core  

The architecture and ppGpp-dependent expression of the primary transcriptome of Salmonella Typhimurium during invasion gene expression

BMC Genomics, 2012
Background Invasion of intestinal epithelial cells by Salmonella enterica serovar Typhimurium (S. Typhimurium) requires expression of the extracellular virulence gene expression programme (STEX), activation of which is dependent on the signalling ...
Ramachandran Vinoy K, Shearer Neil, Jacob Jobin J, Sharma Cynthia M, Thompson Arthur   +4 more
doaj   +1 more source

Physiology and Transcriptional Analysis of (p)ppGpp-Related Regulatory Effects in Corynebacterium glutamicum

Frontiers in Microbiology, 2019
The alarmone species ppGpp and pppGpp are elementary components of bacterial physiology as they both coordinate the bacterial stress response and serve as fine-tuners of general metabolism during conditions of balanced growth.
Matthias Ruwe, Marcus Persicke, Tobias Busche, Benjamin Müller, Jörn Kalinowski   +4 more
doaj   +1 more source

The relationship between guanosine tetraphosphate, polysomes and RNA synthesis in amino acid starved Escherichia coli.

, 1978
International audienceA relA+ strain of E. coli with four amino acid requirements was starved separately for each amino acid, after which the levels of polysomes, guanosine-5'-diphosphate-3'-diphosphate and the residual net synthesis of RNA were ...
Santonastaso, V., Roche, J., Cozzone, Aj, Donini, P.   +3 more
core   +1 more source

From Dormancy to Eradication: Strategies for Controlling Bacterial Persisters in Food Settings

Foods
Bacterial persistence, a dormant state that enables microorganisms to survive harsh conditions, is a significant concern in food-industry settings, where traditional antimicrobial treatments often fail to eliminate these resilient cells.
Susana Serrano, Mirjana Ž. Grujović, Katarina G. Marković, Maria Teresa Barreto-Crespo, Teresa Semedo-Lemsaddek   +4 more
doaj   +1 more source

Cell-length heterogeneity: a population-level solution to growth/virulence trade-offs in the plant pathogen Dickeya dadantii.

PLoS Pathogens, 2019
Necrotrophic plant pathogens acquire nutrients from dead plant cells, which requires the disintegration of the plant cell wall and tissue structures by the pathogen.
Zhouqi Cui, Ching-Hong Yang, Roshni R Kharadi, Xiaochen Yuan, George W Sundin, Lindsay R Triplett, Jie Wang, Quan Zeng   +7 more
doaj   +1 more source