Publications by authors named "Mariko Bito"
Article Synopsis
- Adenyl cobamide, or pseudovitamin B, is produced by intestinal bacteria or found in certain cyanobacteria, but its impact on mammalian enzymes has not been extensively researched.
- This study tested how pseudovitamin B influences the enzymes methionine synthase and methylmalonyl-CoA mutase in mammalian cells.
- Results showed that while the hydroxo form can work as a coenzyme for methionine synthase, pseudovitamin B does not enhance its translation and doesn’t affect methylmalonyl-CoA mutase; it may also hinder the absorption of vitamin B by interfering with transcobalamin II.
Vitamin B was determined and characterized in 19 dried Chlorella health supplements. Vitamin contents of dried Chlorella cells varied from <0.1 μg to approximately 415 μg per 100 g of dry weight.
View Article and Find Full Text PDFAcceleration of Acid-Catalyzed Hydrolysis in a Biphasic System by Sodium Tetracyanocyclopentadienides.
Chem Pharm Bull (Tokyo)
January 2017
The hydrolysis of tert-butyldimethylsilyl L-menthyl ether (3) in a CH2Cl2-1 M HCl biphasic solvent system was accelerated by the addition of sodium tetracyanocyclopentadienides 1. Particularly, the reaction rate was enhanced using sodium salt 1a-c with a lipophilic substituent on the cyclopentadienide ring. From the results obtained by a triphasic experiment, hydrolysis proceeds via the formation of hydronium ion 2 in the aqueous phase by ion exchange, followed by the transfer of 2 to the CH2Cl2 phase.
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