Name: Nonan-1-ol, New discoveries in chemical research and development in 2021. Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 143-08-8, Name is Nonan-1-ol, SMILES is CCCCCCCCCO, belongs to quinuclidine compound. In a article, author is Primozic, I, introduce new discover of the category.
In order to explain different rates of hydrolysis of (R)- and (S)-quinuclidin-3-yl benzoates and benzoylcholine catalyzed with butyrylcholinesterase, semiempirical PM3 calculations were performed with an assumed active site model of human BChE (20 amino acids). Contributions of different protein residues to the stabilization of Michaelis complexes and tetrahedral intermediates were analyzed. It was shown that the hydrolysis rates of quinuclidinium enantiomers were to an appreciable extent affected by the existence or absence of the hydrogen bond between the quinuclidinium N+-H group and the protein residues. Calculations indicated that the better stabilization of quinuclidinium moiety in the Michaelis complex than in the tetrahedral intermediate was the main reason for a greater barrier and a slower reaction rate of the (R)-enantiomer of quinuclidinium esters compared to benzoylcholine. In the case of (S)-enantiomer, the calculation indicated that the barrier to the substrate reorientation from a favourable, but non-productive binding to a productive one significantly influenced the rate of hydrolysis.
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Reference:
Quinuclidine – Wikipedia,
,Quinuclidine | C7H13N | ChemSpider