Results 211 to 220 of about 71,609 (291)

Redirecting a Fungal Quercetin 2,3‐Dioxygenase Toward Artificial Flavonols

ChemCatChem, Volume 18, Issue 6, 27 March 2026.
A novel quercetin 2,3‐dioxygenase was engineered to reshape its substrate‐binding cavity and redirect its specificity toward artificial flavonols. One variant with a larger substrate‐binding cavity exhibited 20‐ to 1750‐fold higher activity toward bulky flavonols with phenyl‐based substitutions at position C‐8.
Michael Kotik, Natalia Kulik, Stanislav Musil, Petr Halada, Lucie Petrásková, Andrea Ramundo, Tatsiana Charnavets, Martina Hurtová, Vladimír Křen, Kateřina Valentová   +9 more
wiley   +1 more source

Recent clinical advances in fibroblast activation protein targeted radioligand therapy for solid tumors. [PDF]

Front Nucl Med
Wu X, Wang Y, Li Y, Hu W.
europepmc   +1 more source

Cooperative Reactivity of Methylene‐Linked Bis‐Triazolylidene Ligands in Tungsten‐Catalyzed Alcohol Dehydrogenation

ChemistryEurope, Volume 4, Issue 3, March 2026.
A tetracarbonyl tungsten complex bearing a bis‐triazolylidene ligand exhibits excellent catalytic activity in the acceptorless dehydrogenative coupling of 1‐phenylethanol and 2‐aminobenzyl alcohol to form 2‐phenylquinoline with H2 evolution. Mechanistic investigations combining experimental and DFT studies reveal the unprecedented base‐promoted ...
Beatriz Garcia, Maria Batuecas, Beatriz Royo   +2 more
wiley   +1 more source

Understanding the influence of marine nutrients on insectivorous and herbivorous reptiles in the Gulf of California islands. [PDF]

PLoS One
Barraza-Soltero IK, Blázquez M, Hernández-Vázquez S, Delgado-Huertas A, Muro-Torres VM.   +4 more
europepmc   +1 more source

Broadening the Workflow for Synchrotron‐Based X‐Ray Fluorescence and X‐Ray Absorption Spectroscopy Imaging of Low‐Abundance Cellular Metals

Chemistry–Methods, Volume 6, Issue 3, March 2026.
We present an accessible plunge‐freezing and freeze‐drying workflow for preparing adherent mammalian cells for synchrotron‐based nanofocused X‐ray fluorescence (XRF) microscopy and X‐ray absorption spectroscopy (XAS), enabling sub‐micron mapping of metal distribution and chemical speciation.
Joaquin Tamargo‐Azpilicueta, Rafael L. Giner‐Arroyo, Pablo Rivero‐García, Sofia Diaz‐Moreno, Miguel A. Gomez‐Gonzalez, Abbey Telfer, Michelangelo Campanella, Miguel A. De la Rosa, Irene Díaz‐Moreno   +8 more
wiley   +1 more source

Multiple formation pathways for amino acids in the early Solar System based on carbon and nitrogen isotopes in asteroid Bennu samples. [PDF]

Proc Natl Acad Sci U S A
Baczynski AA, Mcintosh OM, Simkus DN, McLain HL, Dworkin JP, Glavin DP, Elsila JE, Matney M, House CH, Freeman KH, Connolly HC, Lauretta DS.   +11 more
europepmc   +1 more source

Drought‐driven lipid deficits in overwintering monarch butterflies revealed by δ2H and fatty acid analysis

Ecosphere, Volume 17, Issue 3, March 2026.
Abstract Eastern populations of monarch butterflies (Danaus plexippus) overwinter in the central trans‐volcanic belt of Mexico, relying primarily on lipids accumulated during migration to sustain this several‐month‐long overwintering period. This study shows how drought conditions in north‐central Mexico influenced lipid dynamics in monarchs ...
Libesha Anparasan, Matthias Pilecky, M. Isabel Ramirez, Keith A. Hobson, Martin J. Kainz, Leonard I. Wassenaar   +5 more
wiley   +1 more source

Appraisal of groundwater susceptibility to pollution using hybrid framework of stable isotopes and indexed approach. [PDF]

Sci Rep
Hagagg K, Sirag NM.
europepmc   +1 more source

Neoarchean Arc Magmatism and Crust Recycling in the Northern Marginal Zone of the Limpopo Complex, Zimbabwe: New Insights From Zircon U‐Pb‐Hf Isotopes of a Charnockite Suite

Geological Journal, Volume 61, Issue 3, Page 566-592, March 2026.
Charnockites with 2691–2607 Ma magmatic ages from the NMZ show arc‐magmatic geochemical signatures. They correspond to the lower‐crustal equivalent of the Chilimanzi Suite Granite in the Zimbabwe Craton. Lu‐Hf isotopic data of magmatic zircons show negative εHf(t) values (−11.18 to −2.20) with TDMC ages of 3699–3158 Ma, suggesting their protolith ...
Toshiaki Tsunogae, Md. Sazzadur Rahman, Gao Pin, M. Santosh, Wataru Fujisaki, Sam Uthup, Prince Mandingaisa   +6 more
wiley   +1 more source

The variety and origin of materials accreted by Bennu's parent asteroid. [PDF]

Nat Astron
Barnes JJ, Nguyen AN, Abernethy FAJ, Bajo K, Bekaert DV, Bloch E, Brennecka GA, Busemann H, Cowpe JS, Crowther SA, Ek M, Fawcett LJ, Fehr MA, Franchi IA, Füri E, Gilmour JD, Grady MM, Greenwood RC, Haenecour P, Kawasaki N, Koefoed P, Krietsch D, Le L, Liszewska KM, Maden C, Malley J, Marrocchi Y, Marty B, Meyer LAE, Peretyazhko TS, Piani L, Render J, Russell SS, Rüfenacht M, Sakamoto N, Schönbächler M, Shollenberger QR, Smith L, Thomas-Keprta K, Verchovsky AB, Villeneuve J, Wang K, Welten KC, Wimpenny J, Worsham EA, Yurimoto H, Zimmermann L, Zhao X, Alexander CMO, Amini M, Baczynski A, Bland P, Borg LE, Burgess R, Caffee MW, Chaves LC, Clay PL, Dworkin JP, Foustoukos DI, Glavin DP, Hamilton VE, Hill D, House CH, Huss GR, Ireland T, Jilly CE, Jourdan F, Keller LP, Kruijer TS, Lai V, McCoy TJ, Nagashima K, Nishiizumi K, Ogliore R, Ong IJ, Reddy SM, Rickard WDA, Sandford S, Saxey DW, Timms N, Weis D, Wilbur ZE, Zega TJ, DellaGiustina DN, Wolner CWV, Connolly HC, Lauretta DS.   +86 more
europepmc   +1 more source