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Fully Atomistic Molecular Dynamics Simulation of Ice Nucleation Near an Antifreeze Protein.
J Am Chem Soc
January 2025
Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong, Kowloon 999077, China.
Heterogeneous ice nucleation is a widespread phenomenon in nature. Despite extensive research on ice nucleation near biological antifreeze proteins, a probe for ice nucleation and growth processes at the atomic level is still lacking. Herein, we present simulation evidence of the heterogeneous ice nucleation process on the ice-binding surface (IBS) of the antifreeze protein (TmAFP).
View Article and Find Full Text PDFExposure to Secondhand Cannabis Smoke Among Children.
JAMA Netw Open
January 2025
Herbert Wertheim School of Public Health and Human Longevity Science, University of California, San Diego.
Importance: The degree that in-home cannabis smoking can be detected in the urine of resident children is unclear.
Objective: Test association of in-home cannabis smoking with urinary cannabinoids in children living at home.
Design, Setting, And Participants: This cross-sectional study used baseline data from Project Fresh Air, a 2012-2016 randomized clinical trial to reduce fine particulate matter levels.
Iron limitation triggers roseoceramide biosynthesis and membrane remodeling in marine roseobacter.
Proc Natl Acad Sci U S A
January 2025
Department of Chemistry, Princeton University, Princeton, NJ 08544.
Chemical communication between marine bacteria and their algal hosts drives population dynamics and ultimately determines the fate of major biogeochemical cycles in the ocean. To gain deeper insights into this small molecule exchange, we screened niche-specific metabolites as potential modulators of the secondary metabolome of the roseobacter, . Metabolomic analysis led to the identification of a group of cryptic lipids that we have termed roseoceramides.
View Article and Find Full Text PDFAntibacterials with Novel Chemical Scaffolds in Clinical Development.
Drugs
January 2025
Department of Chemical Biology, Helmholtz Centre for Infection Research, Inhoffenstraße 7, 38124, Braunschweig, Germany.
The rise of antimicrobial resistance represents a significant global health threat, driven by the diminishing efficacy of existing antibiotics, a lack of novel antibacterials entering the market, and an over- or misuse of existing antibiotics, which accelerates the evolution of resistant bacterial strains. This review focuses on innovative therapies by highlighting 19 novel antibacterials in clinical development as of June 2024. These selected compounds are characterized by new chemical scaffolds, novel molecular targets, and/or unique mechanisms of action, which render their potential to break antimicrobial resistance particularly high.
View Article and Find Full Text PDFSoil and climatic conditions determine the rhizobia in association with Phaseolus vulgaris in southern Brazil.
Braz J Microbiol
January 2025
Laboratório de Genética de Microrganismos (LAGEM), Departamento de Biologia Geral - CCB, Universidade Estadual de Londrina - Campus Universitário, Londrina, PR, Brazil.
The common bean (Phaseolus vulgaris L.) plays a significant economic and social role in Brazil. However, the national average yield remains relatively low, largely because most bean cultivation is undertaken by small-scale farmers.
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