Results 171 to 180 of about 1,338,850 (289)

Chemoenzymatic Synthesis of Well‐Defined α(2,8)‐ and α(2,9)‐Linked Oligosialosides

Angewandte Chemie, EarlyView.
Well‐defined α(2,8)‐ and α(2,9)‐linked oligosialic acids of different lengths can be prepared by employing recombinant bacterial polysialyltransferases in combination with chemically modified CMP‐Neu5Ac derivatives. After transfer, a sialoside is formed bearing an artificial entity, which blocks further glycosylation.
Jelle A. Fok, Keshav Kishor, Mehman I. Bunyatov, Gerlof P. Bosman, Geert‐Jan Boons   +4 more
wiley   +2 more sources

Targeted Metabolomics Resolves Amino Acid and Lipid Specialization Between Pileus and Stipe in Artificially Cultivated <i>Termitomyces upsilocystidiatus</i>. [PDF]

Life (Basel)
Yang X, Tian Q, Huang Z, Ye L, Long W, Zhang B, Liu Y, Li X.   +7 more
europepmc   +1 more source

Harnessing the Reactivity of Sulfinate Salts With Cystine: An Umpolung Approach to Residue‐Specific Peptide Modification

Angewandte Chemie, EarlyView.
While cysteine is widely employed as a nucleophilic handle for peptide modification, the electrophilicity of the oxidized form, cystine, is rarely exploited. This study describes a mild, photochemical coupling of sulfinate salts with peptide disulfides.
Joshua M. Hammond, Esteban Suárez‐Picado, Lena von Sydow, Hanna Bruss, Laurent Knerr, Magnus Johansson, Anaïs Noisier, Lara R. Malins   +7 more
wiley   +2 more sources

Meat flavor of <i>Macrobrachium nipponense</i> processing by gas chromatography-ion mobility spectrometry, electronic nose and metabolomics is changed by dietary ferulic acid. [PDF]

Food Chem X
Liu X, Zhu L, Sun C, Hou Y, Yu Y, Zheng X, Liu B, Jiang S, Han Y, Liu B, Xu G.   +10 more
europepmc   +1 more source

Acetylene Semi‐Hydrogenation by Photocatalysis

Angewandte Chemie, EarlyView.
Photocatalytic acetylene semi‐hydrogenation is an emerging light‐driven route to polymer‐grade ethylene, offering a mild alternative to energy‐intensive thermocatalysis. By replacing H2 co‐feed with water or other proton sources, these systems can achieve high selectivity under ambient conditions.
Anna Fortunato, Brando Adranno, Sharon Silloni, Marianna Barbieri, Claudia Masia, Francesca Arcudi, Luka Đorđević   +6 more
wiley   +2 more sources

Stress-induced iron-sulfur cluster damage as a conserved trigger of the bacterial stringent response. [PDF]

Nat Commun
Michaud E, Ricci L, Lallement C, Barquist L, Cattoir V, Michaux C, Hallez R, Ronneau S.   +7 more
europepmc   +1 more source

Flavin Catalysts in Organic Synthesis

Angewandte Chemie, EarlyView.
Flavins and their congeners are potent catalysts for organic synthesis inspired by enzymatic transformations. In addition to catalysis in the flavin ground state via covalent intermediates, the excited singlet and triplet states unlock applications including photooxidation, photoreduction, and energy transfer via sensitization.
Jan Freudenberg, Golo Storch
wiley   +2 more sources

Comparative profiling of volatile and non-volatile compounds associated with odor and taste in uncooked and cooked farmed golden apple snails (<i>Pomacea canaliculata</i>): Sanim and Srithong varieties. [PDF]

Food Chem X
Sai-Ut S, Indriani S, Srisakultiew N, Kingwascharapong P, Karnjanapratum S, Rawdkuen S, Benjakul S, Pongsetkul J.   +7 more
europepmc   +1 more source

Synthesis and One‐Electron Reduction of Donor‐Acceptor‐Stabilized SiII–EII–SiII Trimetallylenes (E = Ge, Sn, Pb)

Angewandte Chemie, EarlyView.
The first isolable trimetallylenes (SiII)2EII (E = Ge, Sn, Pb) with pπ‐type silanylidenyl donors have been synthesized, having donor–acceptor electronic structures that give rise to near‐infrared absorption and enable access to bis(silanylidenyl)‐supported GeI and SnI radical anions upon one‐electron reduction with elemental potassium. ABSTRACT Herein,
Chaopeng Hu, Shenglai Yao, Christian Lorent, Matthias Driess   +3 more
wiley   +2 more sources

Integrating Free Amino Acid Profiles with Flavoromics to Characterize the Flavor Characteristics of Different <i>Morchella</i> Species. [PDF]

Foods
Li J, Liu J, Li Y, Gao Z, Wang L, Song Q, Ye Y, Liang J.   +7 more
europepmc   +1 more source