Results 11 to 20 of about 36,702 (164)
Prebiotic Synthesis of Aspartate Using Life’s Metabolism as a Guide
A protometabolic approach to the origins of life assumes that the conserved biochemistry of metabolism has direct continuity with prebiotic chemistry. One of the most important amino acids in modern biology is aspartic acid, serving as a nodal metabolite
Stuart A. Harrison +3 more
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Biosynthesis of food constituents: Vitamins. 2. Water-soluble vitamins: Part 1 - a review
This review article gives a survey of the generally accepted biosynthetic pathways that lead to water-soluble vitamins in microorganisms, plants and some animals.
Jan Velíšek, Karel Cejpek
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All-enzymatic HPLC method for determination of individual and total contents of vitamin B6 in foods
Background : There is a need for a reliable and accurate method for quantification of each of the seven individual vitamin B6 compounds including pyridoxine-β-glucoside in foods.
Huong Thi Viet Do +3 more
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A new rapid and accurate method was developed for simultaneous determination of pyridoxine and pyridoxal in ginkgo seeds, using ultra-performance liquid chromatography (UPLC) equipped with a fluorescence detector.
Yuan Gao +5 more
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The importance of vitamin B6 has been known since its discovery in the 1940's. Chemical tests, elestrometric titration determinations, and absorption spectrum studies showed that this vitamin exists in three major chemical forms: pyridoxine (an alcohol),
Vučijak Nevena Ž. +4 more
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Abstract The effect of pH on the relative distribution of pyridoxal structures in aqueous solution was examined by fluorescence spectroscopy. The hemiacetal structure, which is the predominant species at neutral pH, exhibits a symmetrical emission band at 378 mµ and is characterized by a quantum yield of 0.08.
J E, Wampler, J E, Churchich
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SNZ3 Encodes a PLP Synthase Involved in Thiamine Synthesis in Saccharomyces cerevisiae
Pyridoxal 5′-phosphate (the active form of vitamin B6) is a cofactor that is important for a broad number of biochemical reactions and is essential for all forms of life.
Michael D. Paxhia, Diana M. Downs
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Simultaneous Determination of Underivatized Vitamin B1 and B6 in Whole Blood by Reversed Phase Ultra High Performance Liquid Chromatography Tandem Mass Spectrometry. [PDF]
Vitamin B1 (thiamine-diphosphate) and B6 (pyridoxal-5'phosphate) are micronutrients. Analysis of these micronutrients is important to diagnose potential deficiency which often occurs in elderly people due to malnutrition, in severe alcoholism and in ...
Johan Puts +3 more
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Vitamin B6 Acquisition and Metabolism in Schistosoma mansoni
Schistosomes are parasitic platyhelminths that currently infect >200 million people globally. The adult worms can live within the vasculature of their hosts for many years where they acquire all nutrients necessary for their survival and growth.
Akram A. Da’dara +4 more
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Pyridoxal 5'-phosphate is a slow tight binding inhibitor of E. coli pyridoxal kinase. [PDF]
Pyridoxal 5'-phosphate (PLP) is a cofactor for dozens of B(6) requiring enzymes. PLP reacts with apo-B(6) enzymes by forming an aldimine linkage with the ε-amino group of an active site lysine residue, thus yielding the catalytically active holo-B(6 ...
Mohini S Ghatge +10 more
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