Results 41 to 50 of about 1,567,546 (339)

Experimental evidence for a chiral symmetry-breaking mechanism in aspartic acid: lattice and sub-lattice matching

open access: yes, 2020
Sem informaçãoA mother crystal formed from a transient molecular structure of (D+L) aspartic acid in solution is reported. Hexagonal structures with a lattice constant of 1.04 nm were crystallized from a solution in which three aspartic acid species ...
Teschke, O., Soares, D. M.
core   +1 more source

IMPDH inhibition enhances cytarabine efficacy in SAMHD1‐expressing leukaemia cells via guanine nucleotide depletion

open access: yesMolecular Oncology, EarlyView.
Cytarabine is a key therapy for acute myeloid leukaemia (AML), but its efficacy is limited by the dNTPase SAMHD1, which hydrolyses its active metabolite. Screening nucleotide biosynthesis inhibitors revealed that IMPDH inhibitors selectively sensitise SAMHD1‐proficient AML cells to cytarabine.
Miriam Yagüe‐Capilla   +9 more
wiley   +1 more source

Changes of Metabolites and Related Flavors in Mandarin Fish (Siniperca chuatsi) during 24 h of Refrigeration [PDF]

open access: yesShipin Kexue
The study aimed to investigate the changes of metabolites and related flavors in the muscle of fresh mandarin fish (Siniperca chuatsi) during 24 h of postmortem refrigeration at 4 ℃ by ultra performance liquid chromatography coupled with high resolution ...
ZHOU Beibei, WU Minglin, JIANG Yangyang, SUN Yongxu, LI Haiyang, CUI Kai
doaj   +1 more source

Biosynthesis of N-Acetyl-l-aspartic Acid

open access: yesJournal of Biological Chemistry, 1959
(Received for publication, May 11, 1959) The occurrence of N-acetyl+aspartic acid in mammalian and avian brain at concentrations from 80 to 120 mg per 100 g fresh weight of tissue was demonstrated recently by Tallan et al. (1). The pattern of distribution of acetylaspartic acid in bovine brain was found by Tallan (2) to parallel that of many enzymes ...
openaire   +2 more sources

Establishing an assay to evaluate d‐amino acid oxidase enzyme kinetics and inhibition using WST‐8 redox dye

open access: yesFEBS Open Bio, EarlyView.
This study investigated a novel WST‐8‐based assay for evaluating d‐Amino acid oxidase (DAO) inhibitors. We confirmed its effectiveness using known inhibitors and found that uremic toxins possess relatively weak inhibitory activity compared to existing drugs.
Kahoko Miyake   +4 more
wiley   +1 more source

Metabolomics Analysis Identifies Differential Metabolites as Biomarkers for Acute Myocardial Infarction

open access: yesBiomolecules
Myocardial infarction (MI), including ST-segment elevation MI (STEMI) and non-ST-segment elevation MI (NSTEMI), is still a leading cause of death worldwide.
Jie Zhou   +8 more
doaj   +1 more source

Studies on the Electrochemical Behaviors of Epinephrine at a Poly(l-aspartic acid) Modified Glassy Carbon Electrode and Its Analytical Application

open access: yesInternational Journal of Electrochemical Science, 2011
The electrochemical behaviors of Epinephrine (EP) on a poly(l-aspartic acid) membrane are studied by cyclic voltammetry and electrochemical impedance spectroscopy (EIS).
YU Zhang-yu   +4 more
doaj   +1 more source

Comprehensive evaluation of caloric restriction-induced changes in the metabolome profile of mice

open access: yesNutrition & Metabolism, 2022
Objects Caloric restriction (CR) is known to extend lifespan and exert a protective effect on organs, and is thus a low-cost and easily implemented approach to the health maintenance. However, there have been no studies that have systematically evaluated
Dadi Xie   +11 more
doaj   +1 more source

Towards the directed evolution of an L-aspartate oxidase from Pseudomonas putida [PDF]

open access: yes, 2012
Amino acid oxidases (AAOs) are enantioselective flavoenzymes that catalyse the oxidation of amino acids into imino acids, which spontaneously hydrolyse in water to form keto acids. AAOs have several potential applications, most notably as biocatalysts in
Leese, Charlotte
core  

‐Aspartic Acid

open access: yes, 1994
L-Aspartic acid by successive N-tosylation, anhydride formation, and reduction was converted into (3S)-3-(tosylamino)butano-4-lactone (4). Electrophilic methylation of 4, subsequent iodo-esterification and nucleophilic methylation, followed by ...
Jefford, Charles   +3 more
core   +1 more source

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