Results 171 to 180 of about 12,068,996 (359)

Discovery, Herbicidal Activity and Biosynthesis of a Novel Natural Tetramic Acid from Alternaria Species

Advanced Science, EarlyView.
The biosynthetic mechanism of novel natural tetramic acid S‐TeA in Alternaria alternata is elucidated. Threonine acts as a precursor for 2‐amino‐3‐methylhexanoic acid (AMHA) synthesis via eight key enzymes from the branched‐chain amino acid biosynthetic pathway in the mitochondrion, wherein three unique enzymes (IPMS, IPMDH, and ISMD) play critical ...
He Wang, Yanjing Guo, Qing Liu, Jing Zhang, Qianlong Zhang, Mingying Yang, Qizhen Chen, Sheng Qiang, Bernal E. Valverde, Shiguo Chen   +9 more
wiley   +1 more source

Isotope Discrimination Effects in the Metabolism of Tritiated Glucose

, 1965
Joseph Katz, Robert Rognstad, Robert G. Kemp   +2 more
openalex   +1 more source

Effects of thyrotropin upon thyroidal iodide; studies using thyroid venous cannulation and two radioiodine isotopes. [PDF]

, 1966
G H Isaacs, J. C. ATHANS, I. N. ROSENBERG   +2 more
openalex   +1 more source

Exercise without Weight Loss Prevents Seasonal Decline in Vitamin D Metabolites: The VitaDEx Randomized Controlled Trial

Advanced Science, EarlyView.
In people with overweight or obesity, regular exercise even without weight loss or vitamin D supplementation completely prevents the usual winter decline in the vitamin D metabolite that maintains health at a cellular level, 1,25(OH)2D3, and ameliorates the decline in the vitamin D status marker 25(OH)D.
Oliver J. Perkin, Sophie E. Davies, Martin Hewison, Kerry S. Jones, Javier T. Gonzalez, James A. Betts, Carl Jenkinson, Mark A. Lindsay, Sarah R. Meadows, Damon A. Parkington, Albert Koulman, Dylan Thompson   +11 more
wiley   +1 more source

Deuterium Isotope Effects on Acid-Base Equilibrium of Organic Compounds. [PDF]

Molecules, 2021
Liu M, Gao J.
europepmc   +1 more source

Solvent Deuterium Isotope Effects on Acid-Base Reactions. Part II. Variation of the First and Second Acidity Constants of Carbonic and Sulfurous Acids in Mixtures of Light and Heavy Water. [PDF]

, 1969
Pentti Salomaa, Antti Vesala, Seija Vesala, Tarja Aalto, Per‐Erik Werner, Ulf Junggren, Bo Lamm, Benny Samuelsson   +7 more
openalex   +1 more source

Isotope effects on L-H threshold and confinement in tokamak plasmas

, 2017
C. Maggi, H. Weisen, J. Hillesheim, A. Chankin, E. Delabie, L. Horvath, F. Auriemma, I. Carvalho, G. Corrigan, J. Flanagan, L. Garzotti, D. Keeling, D. King, E. Lerche, R. Lorenzini, M. Maslov, S. Menmuir, S. Saarelma, A. Sips, E. Solano, E. Belonohy, F. Casson, C. Challis, C. Giroud, V. Parail, C. Silva, M. Valisa   +26 more
semanticscholar   +1 more source

A General Strategy for C(sp3)─H Bond Etherification via Quinoline Derivative‐Mediated Electrolysis

Advanced Science, EarlyView.
A quinoline‐based mediator is introduced for the electrochemical etherification of C(sp3)─H bonds, enabling the process with minimal dependence on substrate electronic properties. The reaction demonstrates compatibility with various C─H bonds, including tertiary benzylic C─H bonds and unactivated C(sp3)─H bonds.
Yousen Xu, Hao Wu, ChenXi Zhu, Minjun Tu, Lei Zhang   +4 more
wiley   +1 more source

Revised microbial and photochemical triple-oxygen isotope effects improve marine gross oxygen production estimates. [PDF]

PNAS Nexus, 2022
Sutherland KM, Johnston DT, Hemingway JD, Wankel SD, Ward CP.   +4 more
europepmc   +1 more source

The nitrogen cycle: A review of isotope effects and isotope modeling approaches

, 2017
T. Denk, J. Mohn, C. Decock, D. Lewicka-Szczebak, E. Harris, K. Butterbach‐Bahl, R. Kiese, B. Wolf   +7 more
semanticscholar   +1 more source