Vitamin and derivative

Xem 1-6 trên 6 kết quả Vitamin and derivative

O-Substituted N(3)-benzyl analogs of vitamin B1 as inhibitors of acetylcholinesterase or butyrylcholinesterase

The selective effects of these inhibitors are governed by substituent at position 5. Kinetic studies and molecular docking simulation were performed for elucidating mechanisms of enzyme-inhibitor complex formation.

12p tocectocec 25-05-2020 7 0 Download

Báo cáo Y học: Exploring the primary electron acceptor (QA)-site of the bacterial reaction center from Rhodobacter sphaeroides Binding mode of vitamin K derivatives

The functional replacement of the primary ubiquinone (QA) in the photosynthetic reaction center (RC) from Rhodo-bacter sphaeroideswith synthetic vitamin K derivatives has provided a powerful tool to investigate the electron transfer mechanism. To investigate the binding mode of these qui-nones to theQAbinding sitewe have determined the binding free energy and charge recombination rate from QA ± to D + (kAD) of 29 different 1,4-naphthoquinone derivatives with systematically altered structures.

13p research12 01-06-2013 51 4 Download

Báo cáo khoa học: Thiamin diphosphate in biological chemistry: new aspects of thiamin metabolism, especially triphosphate derivatives acting other than as cofactors

Prokaryotes, yeasts and plants synthesize thiamin (vitamin B1) via complex pathways. Animal cells capture the vitamin through specific high-affinity transporters essential for internal thiamin homeostasis. Inside the cells, thi-amin is phosphorylated to higher phosphate derivatives. Thiamin diphos-phate (ThDP) is the best-known thiamin compound because of its role as an enzymatic cofactor.

9p viettel02 22-02-2013 32 3 Download
The Role of Cofactor in Enzyme Catalysis

Trace element (iron, manganese, cobalt, copper, zinc, selenium, and molybdenum): chemical element that is needed in minute quantities for the proper growth, development, and physiology of the organism. In biochemistry, a trace element is also referred to as a micronutrient.

25p zingzing09 21-10-2012 80 7 Download
Chapter 071. Vitamin and Trace Mineral Deficiency and Excess (Part 5)

Pellagra: Treatment Treatment of pellagra consists of oral supplementation of 100–200 mg of nicotinamide or nicotinic acid three times daily for 5 days. High doses of nicotinic acid (2 g/d in a time-release form) are used for the treatment of elevated cholesterol and triglyceride levels and/or low high-density lipoprotein (HDL) cholesterol level (Chap. 350). Toxicity Prostaglandin-mediated flushing due to binding of the vitamin to a G protein–coupled receptor has been observed at daily doses as low as 50 mg of niacin when taken as a supplement or as therapy for dyslipidemia.

5p konheokonmummim 03-12-2010 73 6 Download
Vitamin and Colorant

Natural colour isolated from the seeds of the annatto tree (Bixa orellana ). The scientific species name orellana is derived from the name of Francisco de Orellana, a Spanish explorer of the 16.th century.

17p hoangnhi2 09-10-2009 153 37 Download