Six new polyene carboxylic acids named serpentemycins E-J (-), together with three known analogs (-), were isolated from the fermentation medium of sp. TB060207, which was isolated from arid soil collected from Tibet, China. The structures of the new compounds were elucidated mainly on the basis of HR-ESI-MS and NMR spectroscopic analyses. The inhibitory activities of compounds - against NO production in LPS-activated RAW264.7 cells were evaluated. Compound has an inhibition rate of 87.09% to 60.53% at concentrations ranging from 5.0 to 40.0 µM.
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http://dx.doi.org/10.3390/molecules28062579 | DOI Listing |
Planta
January 2025
Institute of Plant Biology, National Taiwan University, Taipei, Taiwan.
PME12-mutated plants displayed altered stomatal characteristics and susceptibility to ABA-induced closure. Despite changes in PME activity, the mutant exhibited enhanced thermotolerance. These findings suggest a complex interplay between pectin methylesterification, ABA response, and stomatal function, contributing to plant adaptation to heat stress.
View Article and Find Full Text PDFAntibiotics (Basel)
December 2024
Gause Institute of New Antibiotics, 11 B. Pirogovskaya, Moscow 119021, Russia.
: In 2022, the World Health Organization highlighted the necessity for the development of new antifungal agents. Polyene antibiotics are characterized by a low risk of drug resistance; however, their use is limited by low solubility and severe side effects. : A series of -alkylated derivatives of amphotericin B and nystatin A as well as their -(2-hydroxyethyl)amides were synthesized.
View Article and Find Full Text PDFBiochem Biophys Res Commun
January 2025
Heilongjiang Academy of Agricultural Sciences, Harbin, 150086, China. Electronic address:
Abiotic stresses, including drought, salinity, and temperature extremes, are serious constraints to plant growth and agricultural development. These stresses that plants face in nature are often multiple and complex. Biotin carboxyl carrier protein subunit 2 (BCCP2) is one of the two subunits of biotin carboxyl carrier protein, which is a functional subunit of acetyl coenzyme A carboxylase, primarily studied for its role in fatty acid synthesis.
View Article and Find Full Text PDFJ Ind Microbiol Biotechnol
January 2024
Department of Environmental System Biology, Sandia National Labs, Albuquerque, NM, USA.
Unlabelled: There is a growing interest in developing a methodology for effectively cleaving carbon-carbon (C-C) bonds in polymer backbones through bioconversion processes that utilize microorganisms and their enzymes. This upsurge of interest is driven by the goal of achieving a circular economy. Polyolefin post-consumer plastics are a substantial source of carbon, but the recycling potential is severely limited.
View Article and Find Full Text PDFPhysiol Plant
December 2024
College of Horticulture, Gansu Agricultural University, Lanzhou, China.
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