A Photosensitivity-Enhanced Plant Growth Algorithm for UAV Path Planning [PDF]
BiomimeticsWith the rise and development of autonomy and intelligence technologies, UAVs will have increasingly significant applications in the future. It is very important to solve the problem of low-altitude penetration of UAVs to protect national territorial ...
Renjie Yang +6 more
doaj +2 more sources
RelZ-Mediated Stress Response in Mycobacterium smegmatis: pGpp Synthesis and Its Regulation. [PDF]
J Bacteriol, 2020 Bacteria utilize nucleotide messengers to survive the hostile environmental conditions and the onslaught of attacks within the host. The second messengers guanosine tetraphosphate and pentaphosphate [(p)ppGpp] have a profound impact on the long-term survival, biofilm formation, antibiotic tolerance, virulence, and pathogenesis of bacteria.
Petchiappan A, Naik SY, Chatterji D.
europepmc +4 more sources
Pleiotropic Effects of Bacterial Small Alarmone Synthetases: Underscoring the Dual-Domain Small Alarmone Synthetases in Mycobacterium smegmatis [PDF]
Frontiers in Microbiology, 2020 The nucleotide alarmone (p)ppGpp, signaling the stringent response, is known for more than 5 decades. The cellular turnover of the alarmone is regulated by RelA/SpoT homolog (RSH) superfamily of enzymes.
Sushma Krishnan, Dipankar Chatterji
doaj +2 more sources
Identification and Functional Characterization of Small Alarmone Synthetases in Corynebacterium glutamicum [PDF]
Frontiers in Microbiology, 2017 The hyperphosphorylated guanosine derivatives ppGpp and pppGpp represent global regulators of the bacterial stress response, as they act as central elements of the stringent response system.
Matthias Ruwe +2 more
doaj +2 more sources
Ultrasensitive, light-induced reversible multidimensional biosensing using THz metasurfaces hybridized with patterned graphene and perovskite. [PDF]
Nanophotonics, 2022 Abstract Biosensors based on terahertz (THz) metasurfaces have recently attracted widespread attention. However, few have been reported so far because it is a challenge to achieve ultrasensitive multidimensional detection in the THz spectrum. Here, we propose a novel THz biosensor that consists of a metasurfaces and a metal oxide semiconductor‐like ...
Yao H +14 more
europepmc +2 more sources
Regulatory Themes and Variations by the Stress-Signaling Nucleotide Alarmones (p)ppGpp in Bacteria [PDF]
Annual Review of Genetics, 2021 Brent W Anderson +2 more
exaly +2 more sources
New perspectives on the molecular mechanisms of stress signalling by the nucleotide guanosine tetraphosphate (ppGpp), an emerging regulator of photosynthesis in plants and algae. [PDF]
New Phytol, 2023 Summary The nucleotides guanosine tetraphosphate and guanosine pentaphosphate (together (p)ppGpp) are found in a wide range of prokaryotic and eukaryotic organisms where they are associated with stress signalling. In this review, we will discuss recent research highlighting the role of (p)ppGpp signalling as a conserved regulator of photosynthetic ...
Mehrez M, Romand S, Field B.
europepmc +2 more sources
Biochemical and X‐ray analyses of the players involved in the faRel2/aTfaRel2 toxin–antitoxin operon
Acta Crystallographica Section F, Volume 79, Issue 10, Page 247-256, October 2023., 2023 Crystallization strategies for and structural analyses of all of the players in the faRel2/aTfaRel2 toxin–antitoxin system are reported.The aTfaRel2/faRel2 operon from Coprobacillus sp. D7 encodes a bicistronic type II toxin–antitoxin (TA) module. The FaRel2 toxin is a toxic small alarmone synthetase (toxSAS) that inhibits translation through the ...
Lucia Dominguez-Molina +6 more
wiley +1 more source
Freshwater Biology, Volume 68, Issue 7, Page 1224-1237, July 2023., 2023 Abstract Globally, lakes are warming and browning with ongoing climate change. These changes significantly impact a lake's biogeochemical properties and all organisms, including invertebrate consumers. The effects of these changes are essential to understand, especially during critical periods after and before the growing season, that is, autumn and ...
Shuntaro Koizumi +5 more
wiley +1 more source
Systemic characterization of pppGpp, ppGpp and pGpp targets in Bacillus reveals NahA converts (p)ppGpp to pGpp to regulate alarmone composition and signaling [PDF]
, 2020 Abstract The alarmones pppGpp and ppGpp (collectively (p)ppGpp) protect bacterial cells from nutritional and other stresses. Here we demonstrate the physiological presence of pGpp as a third closely related alarmone in bacterial cells and also characterize and compare the proteomic targets of pGpp, ppGpp and pppGpp in
Jin Yang +7 more
openaire +1 more source