Results 191 to 200 of about 13,523 (239)

Thiamine pyrophosphate-metal ion complexation: equilibrium and kinetics

Biochimica et Biophysica Acta (BBA) - General Subjects, 1973
Abstract 1. 1. Acid dissociation constants of thiamine pyrophosphate have been determined from pH titration data at 25°C in 0.1 M KNO3. 2. 2. Stability constants of the metal ion-thiamine pyrophosphate complexes MTPP and MHTPP+, where M is Mg2+, Mn2+, Cu2+, Ni2+, Cu2+, or Zn2+, have been determined from pH titration data at 25°C in 0.1 M ...
H B, Katz, K, Kustin
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Charge transfer interactions in transketolase-thiamine pyrophosphate complex

Biochemical and Biophysical Research Communications, 1970
Abstract Absorption spectra of apo- and holotransketolase were measured and the results were compared with those of model systems. This comparison suggests that thiamine pyrophosphate, coenzyme of transketolase, interacts with tryptophanyl residue in the active centre of apoenzyme.
G A, Kochetov, R A, Usmanov
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Thiamin status of the elderly: dietary intake and thiamin pyrophosphate response.

Journal of the American College of Nutrition, 1994
The present study was undertaken to investigate the relationship between thiamin intake and its biochemical status in 60 free-living (30 male, 30 female) elderly subjects (> or = 65 years).Dietary intake was estimated using a 3-nonconsecutive-day food record.
H K, Nichols, T K, Basu
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Thiamine Pyrophosphate-Catalyzed Enzymatic Decarboxylation of α-Oxo Acids

1971
Publisher Summary This chapter focuses on thiamine pyrophosphate-catalyzed enzymatic decarboxylation of α-oxo acids. The first enzymatic decarboxylation of an α-oxo acid was described as: a fermenting extract from brewer's yeast cleaves pyruvate into acetaldehyde and carbon dioxide.
J, Ullrich, Y M, Ostrovsky, J, Eyzaguirre, H, Holzer   +3 more
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[39] Thiamine pyrophosphate (TPP)—ATP phosphoryl transferase

1970
Publisher Summary This chapter presents the procedure for the assay of thiamine Pyrophosphate (TPP)–adenosine triphosphate (ATP) phosphoryl transferase. The enzyme may be assayed spectrophotometrically in either direction by coupling the adenine nucleotide to the appropriate enzymes and pyridine nucleotide.
Y. Itokawa, J.R. Cooper
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Plasma thiamin pyrophosphate and erythrocyte transketolase in chronic alcoholism

The American Journal of Clinical Nutrition, 1981
Thiamin status in patients with an alcohol problem was studied before and after intramuscular thiamin hydrochloride. Results for erythrocyte transketolase activity and plasma thiamin pyrophosphate are compared. Plasma thiamin pyrophosphate values for healthy human subjects are reported for the first time.
D S, McLaren, M A, Docherty, D H, Boyd
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Cleavage of thiamine pyrophosphate by sulfite in saccharomyces cerevisiae

Zeitschrift f�r Lebensmittel-Untersuchung und -Forschung, 1985
Sulfite at low concentrations (≧ 1 mM caused a cleavage of thiamine in vitro depending upon time, pH value, and temperature. Thiamine monophosphate (TMP) and thiamine pyrophosphate (TPP) were also cleaved, but the reaction rates were slower. For the separation and determination of thiamine, TMP and TPP in yeast high-performance liquid chromatography ...
Lenz, A.-G., Holzer, H.
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The crystal structure of thiamine pyrophosphate

Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry, 1969
C H, Carlisle, D S, Cook
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Treatment of Diabetic Coma with Thiamine Pyrophosphate

Acta Medica Scandinavica, 1955
H V, MARKEN LICHTENBELT, E, FLORIJN
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Red‐cell thiamine pyrophosphate levels in hypophosphatasia

Journal of Inherited Metabolic Disease, 1999
S J, Iqbal, D, Talwar, T, Davies
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