Results 1 to 10 of about 9,840 (204)
Investigation of the Ergopeptide Epimerization Process [PDF]
Computation, 2014 Ergopeptides, like ergocornine and a-ergocryptine, exist in an S- and in an R-configuration. Kinetic experiments imply that certain configurations are preferred depending on the solvent. The experimental methods are explained in this article. Furthermore,
Karsten Andrae +6 more
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Epimerization of ergot alkaloids in feed [PDF]
Heliyon, 2020 Chronic intake of cereals contaminated with ergot alkaloids can cause ergotism and result in the loss of toes and fingers or even death. Today, due to common risk management practices, ergotism is rare as a human disease but remains a problem in ...
Claude Schummer +3 more
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Peptide Epimerization Machineries Found in Microorganisms [PDF]
Frontiers in Microbiology, 2018 D-Amino acid residues have been identified in peptides from a variety of eukaryotes and prokaryotes. In microorganisms, UDP-N-acetylmuramic acid pentapeptide (UDP-MurNAc-L-Ala-D-Glu-meso-diaminopimelate-D-Ala-D-Ala), a unit of peptidoglycan, is a ...
Yasushi Ogasawara, Tohru Dairi
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Specialized aldo-keto reductases trigger complete degradation of mycotoxin deoxynivalenol [PDF]
Nature CommunicationsThe mycotoxin deoxynivalenol (DON) poses severe threats to human and animal well-being globally. Enzymatic degradation is the most effective way to eliminate DON toxicity, yet no catalytic process for complete degradation of DON has been uncovered. Here,
Weijie He +20 more
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Characterization of novel cellobiose 2-epimerases from Teredinibacter Haidensis and Cellvibrio Japonicus [PDF]
BMC BiotechnologyBackground: Cellobiose 2-epimerases (CEs) are promising enzymes that catalyze the conversion of lactose to the bioactive disaccharides epilactose and lactulose.
Yaxian Liu +2 more
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Photocatalyzed Epimerization of Quaternary Stereocenters. [PDF]
J Am Chem SocQuaternary stereocenters play a crucial role in shaping both the molecular topology of small molecules and the outcome of stereoselective transformations. While considerable progress has been achieved in constructing highly substituted carbon centers with varied substitution patterns, the stereoselective synthesis of quaternary carbon centers remains a
Wu L +6 more
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Epimerization of Deoxynivalenol by the Devosia Strain A6-243 Assisted by Pyrroloquinoline Quinone
Toxins, 2021 Deoxynivalenol (DON) is a secondary metabolite produced by several Fusarium species that is hazardous to humans and animals after entering food chains.
Hui Gao +7 more
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(2R,4S,5S)-5-Methoxy-4-methyl-3-oxohept-6-en-2-yl benzoate
IUCrData, 2021 The title compound, C16H20O4, was synthesized in the course of the total synthesis of fusaequisin A in order to verify and confirm the configurations of the stereogenic centers and to exclude the possibility of epimerization during the methylation ...
Ann-Christin Schmidt +2 more
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Poly(L-lactide) Epimerization and Chain Scission in the Presence of Organic Bases
Macromol, 2022 Organocatalysis for polymer chemistry has become a subject of significant interest in the last two decades. In this contribution, we have studied the evolution of the microstructure of poly(L-lactide) in solution in toluene at 105 °C in the presence of ...
Julie Meimoun +3 more
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Molecules, 2021 2,5-diketopiperazines (DKPs) are cyclic dipeptides ubiquitously found in nature. In particular, cyclo(Phe-Pro), cyclo(Leu-Pro), and cyclo(Val-Pro) are frequently detected in many microbial cultures.
Alison Domzalski +6 more
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