Results 131 to 140 of about 21,954 (152)

Simultaneous and direct determination of pyridoxal, pyridoxal-5′-phosphate, and pyridoxic acid in serum by derivative synchronous fluorescence spectroscopy

Analytical Biochemistry, 1986
Simultaneous and direct assays of pyridoxal, pyridoxal-5'-phosphate, and pyridoxic acid in human serum are described. The method applied is based on the reaction of these compounds with beryllium in an ammoniacal medium to yield highly fluorescent derivatives.
Soledad Rubio, Agustina Gómez-Hens, Miguel Valcárcel, Ana Petidier   +3 more
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Interaction between Pyridoxal Kinase and Pyridoxal-5-phosphate-Dependent Enzymes

Journal of Biochemistry, 2003
The interactions of two pyridoxal-5-phosphate (PLP)-dependent enzymes, alanine aminotransferase (ALT) and glutamate decarboxylase (GAD), with pyridoxal kinase (PK) were studied by fluorescence polarization as well as surface plasmon resonance techniques. The results demonstrated that PK can specifically bind to ALT and GAD.
Pik Yuen Cheung, Man Sau Wong, Yun Chung Leung, Mengsu Yang, Wan Chuen Lam, Kang To Ng, Chun Wai Tsang, Chi Chun Fong   +7 more
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[68] Fluorometric assay of pyridoxal

1979
Publisher Summary This chapter describes the fluorometric assay of pyridoxal. The reductive amination of pyridoxal hydrochloride with methyl anthranilate and sodium cyanoborohydride at pH 4.5–5.0 and 35°–38° yields a highly fluorescent amine, which is used for the fluorometric assay of pyridoxal in ethanol at pH 7.
M S Chauhan, K Dakshinamurti
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INTERRELATIONSHIPS BETWEEN PYRIDOXAL PHOSPHATE AND PYRIDOXAL KINASE IN RABBIT BRAIN¹

Journal of Neurochemistry, 1970
Abstract—An inverse relationship was demonstrable between the concentration of pyridoxal phosphate and the activity of pyridoxal kinase in rabbit brain. The administration of pyridoxine elevated the concentration of pyridoxal phosphate and decreased the activity of pyridoxal kinase.
R. B. Kugel, M. S. Ebadi, E. E. McCoy
openaire   +3 more sources

Biotransformation of pyridoxal 5′-phosphate from pyridoxal by pyridoxal kinase ( pdxY ) to support cadaverine production in Escherichia coli

Enzyme and Microbial Technology, 2017
Cadaverine, a five-carbon diamine (1,5-diaminopentane), can be made by fermentation or direct bioconversion and plays an important role as a building block of polyamides. Lysine decarboxylase (CadA) transforms L-lysine to cadaverine and pyridoxal 5'-phosphate (PLP) can increases conversion rate and yield as a cofactor.
Jun-Young Kim, Yong-Keun Choi, Hyun-Joong Kim, Hun-Suk Song, Yun-Gon Kim, Shashi Kant Bhatia, Ganesan Sathiyanarayanan, Yung-Hun Yang, Kyungmoon Park, Jung-Ho Kim   +9 more
openaire   +3 more sources

ChemInform Abstract: CATALYTIC ACTIVITIES OF PYRIDOXAL ANALOGUES PART 1, THE CATALYTIC EFFECTS OF PYRIDOXAL, PYRIDOXAL METHOCHLORIDE, AND PYRIDOXAL N‐OXIDE ON THE RACEMIZATION OF L‐GLUTAMIC ACID

Chemischer Informationsdienst, 1975
AbstractIn einer verbesserten Synthese werden ausgehend von Pyridoxal ‐ HCl (I) a) über die Stufen (II) und (III), das Methochlorid (IV) bzw. b) über die Stufen (II) und (V) das N‐Oxid (VI) dargestellt.
Sakae Emoto, Makoto Ando
openaire   +2 more sources

DRUG-PYRIDOXAL PHOSPHATE INTERACTIONS

Drug Metabolism and Drug Interactions, 1982
In this review it has been pointed out that vitamin B6 and its vitamers can be involved in many interactions with a number of drugs, as well as with the actions of various endocrines and neurotransmitters. Nutritional deficiencies, especially of vitamins and proteins, can affect the manner in which drugs undergo biotransformation, and thereby may also ...
Gessert Cf, Al-Sayegh A, Ebadi M
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ChemInform Abstract: INTERACTION OF PYRIDOXAL WITH CYANIDE

Chemischer Informationsdienst, 1974
AbstractPyridoxal (I) reagiert mit Cyanidionen bei pH 6 zunächst zum Cyanhydrin (II), das ‐ jedoch in das cyclische Isomere (III) übergeht.
H. Ahrens, G. Kartha, N. Angelino, W. Korytnyk   +3 more
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REACTION OF PYRIDOXAL AND PYRIDOXAL‐5‐PHOSPHATE WITH PROTEINS.

Journal of Food Science, 1972
J. Davídek, V. Srncová
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A direct method for preparing pyridoxal and 4‐pyridoxic acid [PDF]

Journal of Heterocyclic Chemistry, 1967
H. Ahrens, W. Korytnyk
openaire   +1 more source