Results 61 to 70 of about 21,587 (210)

Shedding Light on Synthetic Autocatalysis: From Conventional Closed‐Shell Chemistries to Overlooked Open‐Shell Occurrences

Chemistry – A European Journal, EarlyView.
Why add another catalyst when the product itself holds the power to catalyze its own formation? Autocatalysis in synthetic chemistry enhances reaction efficiency and uncovers novel catalytic behavior across both closed‐shell and open‐shell systems, expanding reactivity and enabling innovative design strategies.
Jaspreet Kaur, Joshua P. Barham
wiley   +1 more source

Cloning and expression of the Propionibacterium shermanii methylmalonyl-CoA epimerase gene in Escherichia coli : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Biochemistry at Massey University [PDF]

, 1994
Genomic DNA was isolated from Propionibacterium shermanii (52W). A 454 bp DNA fragment coding for the methylmalonyl-CoA epimerase (EC 5.1.99.1, subsequently referred to as epimerase) was amplified from genomic DNA by the polymerase chain reaction using ...
Saafi, 'Etuate Lui
core  

6-exo-trig Michael addition-lactonizations for catalytic enantioselective chromenone synthesis [PDF]

, 2017
The authors thank the EPSRC Centre for Doctoral Training in Critical Resource Catalysis (CRITICAT, grant code EP/L016419/1, RMNP) for funding.The European Research Council under the European Union’s Seventh Framework Programme (FP7/2007-2013) ERC Grant ...
Cordes, David Bradford, N P, Rifahath Mon, Slawin, Alexandra Martha Zoya, Smith, Andrew David   +3 more
core   +1 more source

Pd(II)‐Catalyzed Strategies for the β‐Arylation of α‐Amino Acids: An Overview

Chemistry – A European Journal, EarlyView.
The graphical abstract summarizes the review “Pd(II)‐Catalyzed Strategies for the β‐Arylation of α‐Amino Acids: An Overview”, highlighting representative Pd(II)‐catalyzed methods for the β‐arylation of α‐amino acids. Key mechanistic features, substrate diversity, and synthetic relevance of these transformations are showcased. Abstract Metal‐catalyzed C─
Davide Illuminati, Claudio Trapella, Vinicio Zanirato, Virginia Cristofori, Anna Fantinati   +4 more
wiley   +1 more source

Toward homochiral protocells in noncatalytic peptide systems

, 2009
The activation-polymerization-epimerization-depolymerization (APED) model of Plasson et al. has recently been proposed as a mechanism for the evolution of homochirality on prebiotic Earth.
A Brack, A Brandenburg, A Brandenburg, A Commeyras, A Lazcano, B-M Rode, C Shen, C Viedma, CJ Welch, D Castelvecchi, D Deamer, D Deamer, D Deamer, D Segrè, D-G Blackmond, D-K Kondepudi, F-C Frank, G Wächtershäuser, G-F Joyce, G-F Joyce, H-J Morowitz, J-A Wattis, J-D Gunton, J-S Langer, J-W Szostak, JD Dunitz, K Soai, L Leman, M Fishkis, M Gleiser, M Gleiser, M Gleiser, M Huber, M Huber, M Reches, M Reches, M-P Robertson, Marcelo Gleiser, N Berclaz, N Berclaz, P-A Monnard, P-G-H Sandars, R Cotterill, R Lathe, R Lathe, R Plasson, R-M Smith, R-P Bywater, S Fox, S Fox, S Fox, S Lonchin, S Rasmussen, S Santoso, S Vauthey, S-L Miller, Sara Imari Walker, UJ Meierhenrich, V-A Avetisov, W-A Bonner, Y Saito, Y Saito   +61 more
core   +1 more source

Numerical dating algorithms of amino acid racemization ratios fromcontinental ostracodes:application to the Guadix-Baza Basin(southern Spain) [PDF]

, 2004
Age calculation algorithms for the D/L ratios of five amino acids (isoleucine, leucine, aspartic acid, phenylalanine and glutamic acid) analysed in continental ostracodes were determined for southern and central Iberian Peninsula, and allow the ...
Torres Pérez-Hidalgo, Trinidad José
core   +2 more sources

Natural extracts of soursop flowers, aged green tea leaves, and ginger rhizomes mitigate thermo‐oxidative degradation of palm olein during plantain chip deep‐frying

Food Biomacromolecules, EarlyView.
Addition of old green tea leaves, soursop flowers and ginger root extract at concentrations 1000, 1400, and 1800 ppm in palm olein significantly extend its shelf‐life during frying of plantain chips. These plants' extracts are potential alternative to the use of synthetic antioxidants in preserving oil quality. Abstract This work was designed to assess
Valerie Demgne Loungaing, Gires Boungo Teboukeu, Sab Sharon Mbape, Fabrice Tonfack Djikeng, Hilaire Macaire Womeni   +4 more
wiley   +1 more source

Identification and neuroprotective properties of NA‐184, a calpain‐2 inhibitor

Pharmacology Research & Perspectives
Our laboratory has shown that calpain‐2 activation in the brain following acute injury is directly related to neuronal damage and the long‐term functional consequences of the injury, while calpain‐1 activation is generally neuroprotective and calpain‐1 ...
Michel Baudry, Yubin Wang, Xiaoning Bi, Yun Lyna Luo, Zhijun Wang, Zeechan Kamal, Alexander Shirokov, Ed Sullivan, Dennis Lagasca, Hany Khalil, Gary Lee, Kathy Fosnaugh, Philippe Bey, Shujaath Mehdi, Greg Coulter   +14 more
doaj   +1 more source

Rational modification of substrate binding site by structure-based engineering of a cellobiose 2-epimerase in Caldicellulosiruptor saccharolyticus

Microbial Cell Factories, 2017
Background Lactulose, a synthetic disaccharide, has received increasing interest due to its role as a prebiotic, specifically proliferating Bifidobacilli and Lactobacilli and enhancing absorption of calcium and magnesium.
Ah-Reum Park, Jin-Sook Kim, Seung-Won Jang, Young-Gyun Park, Bong-Seong Koo, Hyeon-Cheol Lee   +5 more
doaj   +1 more source

Oxepinamide F biosynthesis involves enzymatic d-aminoacyl epimerization, 3H-oxepin formation, and hydroxylation induced double bond migration

Nature Communications, 2020
Oxepinamides are a class of fungal oxepins with biological activities. Here, the authors elucidate the biosynthetic pathway of oxepinamide F from Aspergillus ustus and show that it involves enyme-catalysed oxepin ring formation, hydroxylation-induced ...
Liujuan Zheng, Haowen Wang, Aili Fan, Shu-Ming Li   +3 more
doaj   +1 more source