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Topics in Catalysis, 2013
Transketolase is an enzyme catalysing asymmetric C–C bond formation which is of great interest for many syntheses of biologically active compounds. Enzymatic couplings present many advantages (mild reaction conditions notably), nonetheless their utilisation on an industrial scale is often limited by restricting factors as their activity, substrate ...
Adeline Ranoux, Ulf Hanefeld
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Transketolase is an enzyme catalysing asymmetric C–C bond formation which is of great interest for many syntheses of biologically active compounds. Enzymatic couplings present many advantages (mild reaction conditions notably), nonetheless their utilisation on an industrial scale is often limited by restricting factors as their activity, substrate ...
Adeline Ranoux, Ulf Hanefeld
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Guanidinosuccinic Acid and Transketolase
New England Journal of Medicine, 1971exaly +4 more sources
Substrate inhibition of transketolase
Biochimica et Biophysica Acta (BBA) - Proteins and Proteomics, 2016We studied the influence of the acceptor substrate of transketolase on the activity of the enzyme in the presence of reductants. Ribose-5-phosphate in the presence of cyanoborohydride decreased the transketolase catalytic activity. The inhibition is caused by the loss of catalytic function of the coenzyme-thiamine diphosphate. Similar inhibitory effect
Olga N, Solovjeva +2 more
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Transketolase in Trypanosoma brucei
Molecular and Biochemical Parasitology, 2011A single copy gene, encoding a protein highly similar to transketolase from other systems, was identified in the Trypanosoma brucei genome. The gene was expressed in E. coli and the purified protein demonstrated transketolase activity with K(m) values of 0.2mM and 0.8mM respectively for xylulose 5-phosphate and ribose 5-phosphate.
Stoffel, Sabine A. +7 more
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The affinity chromatography of transketolase
Biochimica et Biophysica Acta (BBA) - Enzymology, 1978A number of possible affinity adsorbents for transketolase (sedoheptulose-7-phosphate:D-glyceraldehyde-3-phosphateglycolaldehydetransferase, EC 2.2.1.1) were prepared. The behaviour of the enzyme from Candida utilis and from Baker's yeast on columns of these and of Blue Sepharose CL-6B was examined, together with the behaviour of the contaminating ...
T, Wood, S, Fletcher
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Erythrocyte transketolase activity in uremia
Clinica Chimica Acta, 1980We performed a study concerning the activity of erythrocyte transketolase and thiamine metabolism in 73 uremic patients with or without neuropathy and 67 normal control subjects. Although the total vitamin B1 level in whole blood was high in the uremic patients, the transketolase activity in the hemolysate and the thiamine pyrophosphate effect on it ...
M, Kuriyama +4 more
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One-Substrate Transketolase-Catalyzed Reaction
Biochemical and Biophysical Research Communications, 2001Apart from catalyzing the common two-substrate reaction with ketose as donor substrate and aldose as acceptor substrate, transketolase is also able to catalyze a one-substrate reaction utilizing only ketose (xylulose 5-phosphate) as substrate. The products of this one-substrate reaction were glyceraldehyde 3-phosphate and erythrulose.
I A, Bykova +4 more
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Analysis of Blood Transketolase Activity
American Journal of Clinical Pathology, 1971The determination of blood transketolase (TK) activity is based on the incubation of lysed erythrocytes with and without added thiamine pyrophosphate (TPP). The increased TK activity resulting from the addition of TPP coenzyme is inversely related to thiamine depletion.
M F, Massod, S L, McGuire, K R, Werner
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Sulfhydryl groups and transketolase activity
Biochemical and Biophysical Research Communications, 1966Abstract Transketolase, an enzyme of pentose cycle, catalyzes the reaction of glycolaldehyde transport from the xylulose-5-phosphate to the ribose-5-phosphate with the formation of sedoheptulose-7-phosphate. There is not much known about this enzyme, especially in respect to its functional groups.
G A, Kochetov, F G, Lutovinova
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