Results 171 to 180 of about 44,709 (259)

Corrigendum to "Enhancing the reconstruction of the Gabasa Neandertal's diet using Ca and Sr stable isotopes" [J. Hum. Evol. 207 (2025) 103747].

J Hum Evol
Dodat PJ, Guiserix D, Jaouen K, Montes L, Utrilla P, Villalba-Mouco V, Maureille B, Balter V.   +7 more
europepmc   +1 more source

Water source of artificial plants in the northeastern margin of Tengger Desert based on hydrogen and oxygen stable isotopes. [PDF]

Front Plant Sci
Zhao Z, Tang G, Li J, Wu M, Zhang L.
europepmc   +1 more source

Water‐Derived Radical Species Initiate Six‐Electron Oxidation of Cyclic Ketones in Microdroplets

Angewandte Chemie, EarlyView.
Spontaneous six‐electron oxidation of cyclic ketones to yield dicarboxylic acids/keto acids is achieved in ethanol microdroplets containing about 2% water under ambient conditions without any metal salts, acids, or oxidants. Mechanistic studies show that trace amounts of water and molecular oxygen serve as active oxidants in this transformation ...
Muhammad Mujahid Ali, Manish Jana, William LeFever, Robert Graham Cooks   +3 more
wiley   +1 more source

Continuous In-Situ Water Stable Isotopes Reveal Rapid Changes in Root Water Uptake by Fagus sylvatica During Severe Drought. [PDF]

Plant Cell Environ
Kinzinger L, Haberstroh S, Mach J, Weiler M, Orlowski N, Werner C.   +5 more
europepmc   +1 more source

New Water Oxidation Mechanism in Photosystem II Resolves Major Experimental Controversies

Angewandte Chemie, EarlyView.
In Photosystem II Oxygen Evolving Complex, we discovered the O3‐O6 peroxide at lower energy. Assignment of the O3 ligated by histidine (His337) as a slow exchanging substrate and its coupling with O6 give the O─O bond formation mechanism most consistent with all currently available experimental data. Proposal shows how protein environment can steer the
Yulia Pushkar
wiley   +1 more source

Origin Traceability of Chinese Mitten Crab (<i>Eriocheir sinensis</i>) Using Multi-Stable Isotopes and Explainable Machine Learning. [PDF]

Foods
Wang D, Yao C, Lu Y, Huang D, Li Y, Wu X, Song W, Rao Q.   +7 more
europepmc   +1 more source

Cysteine Thioaldehydes: Photolytic Generation, Reactivity, and Biological Implications

Angewandte Chemie, EarlyView.
Photolysis of cysteine phenacylsulfides bearing non‐conjugating electron‐withdrawing substituents leads to high conversions into cysteine thioaldehydes through a Norrish type‐II pathway. This methodology enabled the study of the aqueous reactivity of these important biosynthetic intermediates, which, depending on peptide sequence, pH and buffer ...
Ardra Karthika, Matthew Murray, Guillermo Palop, Lee‐Ann J. Keane, Patrick McArdle, Nicholas D. J. Yates, Christopher D. Spicer, Alison Parkin, Martin A. Fascione, Eddie L. Myers   +9 more
wiley   +1 more source

Structural and Functional Siderophore Remodeling by Enzymatic Delipidation

Angewandte Chemie, EarlyView.
A surprising functional switch in bacterial siderophores was discovered through genome mining and the analysis of environmental and pathogenic Pandoraea species. Pandorachelin B, a lipocyclopeptide that promotes swarming motility, is cleaved by a specialized acylase, yielding a ring‐contracted, homodetic cyclopeptide, pandorachelin A, which exhibits ...
Elena Herzog, Keishi Ishida, Evelyn M. Molloy, Ron Hermenau, Kirstin Scherlach, Christian Hertweck   +5 more
wiley   +1 more source

Differentiation of water sources and hydrological thresholds of herb-to-shrub communities across a revegetated chronosequence in Baijitan National Nature Reserve, China: a quantitative analysis using hydrogen-oxygen stable isotopes. [PDF]

Front Plant Sci
Shunxia W, Na Z, Yifei H, Xiaojing M, Hongbin M.   +4 more
europepmc   +1 more source