Results 91 to 100 of about 22,451 (231)

The d-amino acid oxidase of Neurospora [PDF]

, 1944
Among artificially produced mutants of the mold Neurospora have been found strains lacking the ability to synthesize specific amino acids (1, 2). In the course of biochemical and genetic studies of this group of mutants it was observed that some of the ...
Horowitz, N. H.
core  

Variability in intracellular localization of D‐amino acid oxidase in choroid plexus epithelial cells

The FEBS Journal, EarlyView.
D‐amino acid oxidase (DAO) in choroid plexus epithelial cells (CPECs) shows vesicle‐like localization by histological and super‐resolution analyses. DAO colocalizes with peroxisomal, Golgi, endosomal, lysosomal, autophagosomal, and exosomal markers, indicating diverse subcellular distribution. This suggests DAO is transported within CPECs to metabolize
Koji Ono, Yuji Shishido, Toshiyuki Yamagishi, Kiyoshi Fukui   +3 more
wiley   +1 more source

Fluorine containing polyurethane [PDF]

, 1969
A polyurethane polymer prepared by reacting a hydroxy-terminated polyformal with an organic diisocyanate is ...
Trischler, F. D.
core   +1 more source

Contrasting effects of different molecular crowding environments on base‐pair opening/closing dynamics of DNA triplex structures

The FEBS Journal, EarlyView.
Base‐pair opening and closing regulate nucleic‐acid structure, stability, and function, but how these motions behave under intracellular molecular crowding remains unclear. Using NMR, we quantified these dynamics in a DNA triplex under two crowder‐reconstituted environments that mimic cellular crowding.
Tomoki Sakamoto, Yudai Yamaoki, Takashi Nagata, Masato Katahira   +3 more
wiley   +1 more source

Synthesis of 7-Acyl-2,4-disubstituted Pteridines by Radical Nucleophilic Substitution and Displacement Reactions

Pteridines, 2004
2,4-Disubstituted pteridine derivatives (1-3) react with acyl radicals very selectively in position 7 by a nucleophilic Substitution mechanism (4-10).
Döring Thomas, Boruah Romesh C., Pfleiderer Wolfgang   +2 more
doaj   +1 more source

A new variant of the Friedlander reaction in the synthesis of 7,8-dihydro-6H-furo[2,3-b] quinolin-5-ones [PDF]

Известия Саратовского университета. Новая серия: Серия Химия. Биология. Экология
Hydrogenated derivatives of acridine exhibit various types of biological activity – their antibacterial, antitumor, antiviral, psychoactive properties are known. Using the example of heteroanalogs of tacrine, a known cholinesterase inhibitor, it is
Zotova, Irina Sergeevna, Куличихина , Яна Юрьевна, Ковыгин, Юрий Александрвич   +2 more
doaj   +1 more source

Exploring natural sunscreens: UVB protection and antioxidant properties in gadusol‐rich fish roes extracts

Photochemistry and Photobiology, EarlyView.
Gadusol‐rich extracts provide effective UVB protection and antioxidant activity in HaCaT cells and C. elegans, highlighting their potential as natural photochemoprotective agents for pharmaceutical and cosmetic applications. It also demonstrates remarkable in vitro antioxidant capacity and thermal stability over time.
Rocío Isla Naveira, Gabriela Hollmann, José María Monserrat, Ana Paula S. Votto, Julie Medeiros da Silveira, Andressa Mai Matsumoto, Lais Zortéa, Andy Joel Taipe Huisa, Agueda E. Massa, M. Sandra Churio   +9 more
wiley   +1 more source

Дослідження амінокислот стебел, листя та квіток лізіантусу Рассела

Annals of Mechnikov's Institute
Introduction. Amino acids have an immunomodulatory, antidepressant effect, they are components of collagen, reduce the level of triglycerides in the blood, take an active part in the synthesis and assimilation of vitamins, etc. Natural amino acids have a
Anna Olefirenko, Viktoria Kyslychenko
doaj   +1 more source

Asymmetric Transformations of α,β‐Unsaturated Oxazolidinones Catalyzed by C2‐Symmetric Chiral Iron Triad Complexes

Advanced Synthesis &Catalysis, Volume 368, Issue 9, 5 May 2026.
This review highlights the evolution of highly enantioselective oxazolidinone transformations enabled by C2‐symmetric ligands, with emphasis on chiral iron triad complexes as cost‐effective, environmentally benign alternatives to late‐transition‐metal catalysts.
Arthur David, Thierry Ollevier
wiley   +1 more source

Biochemical and structural characterization of a reactive intermediate deaminase A homolog from Streptococcus sanguinis

Scientific Reports
2-Aminoacrylate (2AA) is a short-lived enamine generated as a catalytic intermediate in the dehydration of serine by serine/threonine dehydratase enzymes. 2AA is a metabolic stressor capable of inactivating important pyridoxal phosphate dependent enzymes
Alexa B. Benedict, Adreana I. Aquino, Brandi A. Buckner, Swarmistha Devi Aribam, Chhandosee Ganguly, Leonard M. Thomas, Philip Bourne, Rakhi Rajan, Diana M. Downs, Vijayakumar Somalinga   +9 more
doaj   +1 more source