Results 111 to 120 of about 107,976 (280)

Discovery of a Novel Chromone Enantiomer and the Precursors of Nonactic Acid from the Coral-Reef-Derived Streptomyces sp. SCSIO 66814

Marine Drugs
Three pairs of enantiomers (1–3)—the new 12R-aloesol (1a) and two new fatty acids (2 and 3)—and one new natural product (4) together three known compounds (5–7) were isolated from a coral-reef-derived Streptomyces sp. SCSIO 66814.
Wenping Ding, Yanqun Li, Xingyu Li, Jiajia Yin, Songbiao Shi, Xinpeng Tian, Si Zhang, Hao Yin   +7 more
doaj   +1 more source

Rapid transient absorption and biliary secretion of enantiomeric cholesterol in hamsters

Journal of Lipid Research, 2006
To probe the pathway and specificity of cholesterol absorption, the synthetic enantiomer of cholesterol (ent-cholesterol) and cholesterol were labeled with deuterium, gavaged into hamsters, and measured by negative ion mass spectrometry.
Emily J. Westover, Xiaobo Lin, Terrence E. Riehl, Lina Ma, William F. Stenson, Douglas F. Covey, Richard E. Ostlund, Jr.   +6 more
doaj   +1 more source

Chirality in Liquid Crystals: from Microscopic Origins to Macroscopic Structure [PDF]

, 1997
Molecular chirality leads to a wonderful variety of equilibrium structures, from the simple cholesteric phase to the twist-grain-boundary phases, and it is responsible for interesting and technologically important materials like ferroelectric liquid ...
Harris, A. B., Kamien, Randall D., Lubensky, T. C., Yan, Gu   +3 more
core   +4 more sources

Neutral‐pH Electropolymerization of Aniline on Hierarchically Porous Laser‐Induced Graphene Electrodes for Dual Biosensing

Advanced Materials Technologies, EarlyView.
Neutral‐pH electropolymerization of aniline on laser‐induced graphene (LIG) produces stable, brush‐like polyaniline coatings without requiring acidic conditions. The resulting PANI–LIG electrodes exhibit enhanced electroactive surface area, efficient charge transfer, and dual sensing capability for β‐blockers and pH, providing a scalable platform ...
Angelika Łepek, Aiswarya Manohar, Mattia Pierpaoli, Robert Bogdanowicz, Łukasz Gaweł, Mohsen Khodadadi Yazdi, Jacek Ryl   +6 more
wiley   +1 more source

Susceptibility of Pseudomonas aeruginosa biofilm to alpha-helical peptides: D-enantiomer of LL-37

Frontiers in Cellular and Infection Microbiology, 2011
Pseudomonas aeruginosa is a highly versatile opportunistic pathogen and its ability to produce biofilms is a direct impediment to the healing of wounds and recovery from infection.
Scott N. Dean, Barney M. Bishop, Monique L Van Hoek   +2 more
doaj   +1 more source

Mechanism of action of VP1-001 in cryAB(R120G)-associated and age-related cataracts [PDF]

, 2019
PurposeWe previously identified an oxysterol, VP1-001 (also known as compound 29), that partially restores the transparency of lenses with cataracts. To understand the mechanism of VP1-001, we tested the ability of its enantiomer, ent-VP1-001, to bind ...
Andley, Usha P., Covey, Douglas F., Dunyak, Bryan M., Gestwicki, Jason E., Hamilton, Paul D., Izrayelit, Yevgeniy, Makley, Leah N., McGlasson-Naumann, Brittney, Molnar, Kathleen S., Qian, Mingxing, Su, Bonnie   +10 more
core   +2 more sources

Biogenic Next‐Gen CPL Emitters: Strategies with Proteins, Polysaccharides, and Nucleotides

Advanced Optical Materials, EarlyView.
Biogenic molecules such as proteins, peptides, saccharides, and DNA can act as natural scaffolds for generating circularly polarized luminescence (CPL). This review highlights recent strategies exploiting these inherently chiral frameworks to achieve light emission with controllable handedness under unpolarized excitation, bridging biological ...
Ricardo Chavez‐Jimenez, Gustavo González‐Gaitano, Julio Fernandez‐Cestau, Mattia Nieddu, Juan Pablo Fuenzalida‐Werner   +4 more
wiley   +1 more source

New Butenolides and Cyclopentenones from Saline Soil-Derived Fungus Aspergillus Sclerotiorum

Molecules, 2019
Three new γ-hydroxyl butenolides (1−3), a pair of new enantiomeric spiro-butenolides (4a and 4b), a pair of enantiomeric cyclopentenones (5a new and 5b new natural), and six known compounds (6−11), were isolated from Aspergillus ...
Li-Ying Ma, Huai-Bin Zhang, Hui-Hui Kang, Mei-Jia Zhong, De-Sheng Liu, Hong Ren, Wei-Zhong Liu   +6 more
doaj   +1 more source

Spiral Galaxies as Enantiomers: Chirality, an Underlying Feature in Chemistry and Astrophysics

, 2005
Spiral galaxies are axi-symmetric objects showing 2D-chirality when projected onto a plane. Features in common with tetrahedral molecules are pointed out, in particular the existence of a preferred chiral modality for genetic galaxies as in aminoacids ...
Aryal, Aryal, Avalos, Barron, Binney, Binney, Busarello, Capozziello, Capozziello, Capozziello, Capozziello, Eidelman, Eliel, Elmegreen, Elmegreen, Gerin, Hu, Iye, Kashikawa, King, Kondepudi, Liddle, Lin, Lin, Mislow, Peacock, Rayner, Ruch, Sandage, Sparke, Sugai, Vorontsov-Vel'yaminov   +31 more
core   +1 more source

Plasmonic Metasurfaces with Structural Chirality and Pseudo‐Chirality for Enhanced Circular Dichroism and Enantiomeric Recognition

Advanced Optical Materials, EarlyView.
A planar plasmonic metasurface composed of asymmetric gold nanostructures is shown to exhibit both anisotropic and chiral/pseudo‐chiral optical responses. By tailoring the polarization and angle of incidence, the metasurface significantly enhances optical chirality and enables enantiospecific detection.
Giovanna Palermo, Bryan Guilcapi, Radoslaw Kolkowski, Alexa Guglielmelli, Dante M. Aceti, Liliana Valente, Joseph Zyss, Lucia Petti, Giuseppe Strangi   +8 more
wiley   +1 more source