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| http://dx.doi.org/10.1177/00368504241269438 | DOI Listing |
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Quorum Sensing Coordinates Carbon and Nitrogen Metabolism to Optimize Public Goods Production in Pseudomonas fluorescens 2P24.
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Institute of Health Sciences and Technology, Institutes of Physical Science and Information Technology, Anhui University, Hefei, 230601, China.
The coordination of public and private goods production is essential for bacterial adaptation to environmental changes. Quorum sensing (QS) regulates this balance by mediating the trade-off between the communal benefits of "public goods," such as siderophores and antibiotics, and the individual metabolic needs fulfilled by "private goods," such as intracellular metabolites utilized for growth and survival. Pseudomonas fluorescens 2P24 harbors a LasI/LasR-type QS system, MupI/MupR, which regulates mupirocin production through signaling molecules.
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Cobalt single-atom catalysts (SACs) have the potential to act as bi-functional electrocatalysts for the oxygen-redox reactions in metal-air batteries. However, achieving both high performance and stability in these SACs has been challenging. Here, a novel and facile synthesis method is used to create cobalt-doped-nitrogen-carbon structures (Co-N-C) containing cobalt-SACs by carbonizing a modified ZIF-11.
View Article and Find Full Text PDFNanocrystals with Aggregate Anionic Structure Enable Ion Transport Decoupling of Chain Segment Movement in Poly(ethylene oxide) Electrolytes.
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Nankai University, College of Chemistry, No.94 Weijin Road, 300071, Tianjin, CHINA.
All-solid-state polymer electrolytes are promising for lithium batteries, but Li+ transport in these electrolytes relies on amorphous chain segment movement, leading to low Li+ mobility and poor mechanical strength. Here we propose a novel Li+ transport mechanism mediated by PEO3:LiBF4 nanocrystals (NCPB) with the aggregate (AGG) anionic structure, which enables a change from amorphous to crystalline phase dominated ion transport in all-solid-state PEO/LiBF4 electrolyte. Experiments and simulations reveal that the interaction between Li+ and F in NCPB with AGG anionic structure simultaneously restricts anion transport and reorients anions within the free volume of NCPB, resulting in a three-coordination intermediate to facilitate Li+ transport.
View Article and Find Full Text PDFSubstitution and Electron Transfer in Diborane-Quinone Systems.
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The dual reactivity of boron compounds as Lewis acids and electron donors has spurred the development of a metallomimetic chemistry of boron compounds as a topical research theme. In this work we elaborate on the reaction of specially-designed diborane(4) compounds with quinones, as a prime example showing their dual (metallomimetic) chemistry as a Lewis acid and electron donor. The quinone is first coordinated to the diborane and then reduced by intramolecular electron transfer from the B-B bond to a quinone π* orbital.
View Article and Find Full Text PDFOsteology of the appendicular skeleton of Bagualia alba (Dinosauria, Eusauropoda) from the Lower Jurassic of Patagonia and the macroevolutionary history of early eusauropods.
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Museo Paleontológico Egidio Feruglio (MEF), Fontana 140, U9100GYO, Trelew, Chubut, Argentina.
Since their origin, sauropodomorphs have undergone numerous anatomical changes from small and bipedal early sauropodomorphs towards massive-bodied and quadrupedal sauropods. However, the timing of these changes in the evolution of the group is unclear. Here, we describe the appendicular skeleton of the early diverging eusauropod Bagualia alba from the late Early Jurassic of Patagonia, Argentina, and conduct a morphological disparity analysis based on a phylogenetic dataset of Sauropoda.
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