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2011
Vitamin B6 represents a group of substances with vitamin B activity and these substances are derivatives of 3-hydroxy-2-methylpyridine: pyridoxine (alcohol), pyridoxal (aldehyde), and pyridoxamine (amine), and their 5′-phosphorylated forms. Pyridoxal-5′-phosphate serves mainly as a coenzyme for about 100 enzymes in amino acid metabolism including ...
D. Nohr, H.K. Biesalski, E.I. Back
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Vitamin B6 represents a group of substances with vitamin B activity and these substances are derivatives of 3-hydroxy-2-methylpyridine: pyridoxine (alcohol), pyridoxal (aldehyde), and pyridoxamine (amine), and their 5′-phosphorylated forms. Pyridoxal-5′-phosphate serves mainly as a coenzyme for about 100 enzymes in amino acid metabolism including ...
D. Nohr, H.K. Biesalski, E.I. Back
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Polski tygodnik lekarski (Warsaw, Poland : 1960), 1998
In 1934 Gyorgy observed the appearance of a scaly dermatitis (acrodynia) in rats fed on diets free from the whole vitamin B complex and supplemented with thiamin and riboflavin. This observation led to the establishment of a ‘rat acrodynia-preventative factor’ and its designation as vitamin B6.
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In 1934 Gyorgy observed the appearance of a scaly dermatitis (acrodynia) in rats fed on diets free from the whole vitamin B complex and supplemented with thiamin and riboflavin. This observation led to the establishment of a ‘rat acrodynia-preventative factor’ and its designation as vitamin B6.
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1991
By 1930, there remained no doubt that “water soluble B” was a complex mixture of several essential nutrients. Thiamine, the anti-beriberi vitamin, was easily distinguished from the rest of the B-complex by its rapid inactivation by heat. Teasing out the rest of the B vitamins would prove much more difficult.
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By 1930, there remained no doubt that “water soluble B” was a complex mixture of several essential nutrients. Thiamine, the anti-beriberi vitamin, was easily distinguished from the rest of the B-complex by its rapid inactivation by heat. Teasing out the rest of the B vitamins would prove much more difficult.
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1996
Abstract Vitamin B6 has a central role in the metabolism of amino acids: in transaminase reactions (and hence the interconversion and catabolism of amino acids and the synthesis of non-essential amino acids); in decarboxylation to yield biologically active amines; and in a variety of elimination and replacement reactions.
David A Bender, Arnold E Bender
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Abstract Vitamin B6 has a central role in the metabolism of amino acids: in transaminase reactions (and hence the interconversion and catabolism of amino acids and the synthesis of non-essential amino acids); in decarboxylation to yield biologically active amines; and in a variety of elimination and replacement reactions.
David A Bender, Arnold E Bender
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1985
The term vitamin B6 is used to cover a group of compounds that are metabolically interchangeable, pyridoxol (the alcohol), its aldehyde (pyridoxal) and its amine (pyridoxamine) (Figure 30). They are all colourless crystals soluble in water and alcohol, resistant to normal heat but decomposed by alkalis and ultraviolet light.
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The term vitamin B6 is used to cover a group of compounds that are metabolically interchangeable, pyridoxol (the alcohol), its aldehyde (pyridoxal) and its amine (pyridoxamine) (Figure 30). They are all colourless crystals soluble in water and alcohol, resistant to normal heat but decomposed by alkalis and ultraviolet light.
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