Results 91 to 100 of about 2,651 (134)
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The Journal of Nutrition, 1976
Activity of L-cysteinesulfinate carboxy-lyase (CSC) and persulfurase was measured in livers of rats fed 15% casein diets supplemented with (1) 0.53% cysteine, (2) 0.40% cysteine, (3) 0.40% cysteine + 0.10% sulfate, (4) 0.42% sulfate, or (5) 0.42% sulfate + 0.40% cysteine. The diets were fed to adult rats for 1 week and to weanling rats for periods of 1
B A, Whittle, C H, Lee
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Activity of L-cysteinesulfinate carboxy-lyase (CSC) and persulfurase was measured in livers of rats fed 15% casein diets supplemented with (1) 0.53% cysteine, (2) 0.40% cysteine, (3) 0.40% cysteine + 0.10% sulfate, (4) 0.42% sulfate, or (5) 0.42% sulfate + 0.40% cysteine. The diets were fed to adult rats for 1 week and to weanling rats for periods of 1
B A, Whittle, C H, Lee
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Biochimica et Biophysica Acta (BBA) - Biomembranes, 1976
A sensitive and quantitative assay for 3-octaprenyl-4-hydroxybenzoate carboxy-lyase has been developed. This enzyme, which catalyses the third reaction in ubiquinone biosynthesis in Escherichia coli, was partially purified and some of its properties determined.
R A, Leppik, I G, Young, F, Gibson
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A sensitive and quantitative assay for 3-octaprenyl-4-hydroxybenzoate carboxy-lyase has been developed. This enzyme, which catalyses the third reaction in ubiquinone biosynthesis in Escherichia coli, was partially purified and some of its properties determined.
R A, Leppik, I G, Young, F, Gibson
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Archives of Biochemistry and Biophysics, 1975
Abstract Uridine 5′-(α- d -glucopyranosyluronic acid pyrophosphate) (UDPGluUA) cyclase [UDP GluUA → uridine 5′-(α- d -apio- d -furanosyl pyrophosphate) + CO 2 ] was purified 71-fold from Lemna minor by a four-step procedure. When this purification procedure was used some, but not all, of the UDPGluUA carboxy-lyase [UDPGluUA → uridine 5′-(α- d ...
D L, Gustine, D H, Yuan, P K, Kindel
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Abstract Uridine 5′-(α- d -glucopyranosyluronic acid pyrophosphate) (UDPGluUA) cyclase [UDP GluUA → uridine 5′-(α- d -apio- d -furanosyl pyrophosphate) + CO 2 ] was purified 71-fold from Lemna minor by a four-step procedure. When this purification procedure was used some, but not all, of the UDPGluUA carboxy-lyase [UDPGluUA → uridine 5′-(α- d ...
D L, Gustine, D H, Yuan, P K, Kindel
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Biochemie und Physiologie der Pflanzen, 1977
Summary Orotidine-5′-phosphate: pyrophosphate-phosphoribosyltransferase and orotidine-5′-phosphate: carboxy-lyase were characterized in a crude extract from Euglena gracilis. Z The coupled enzyme reaction was measured by 14 CO 2 release from [7- 14 C]-orotic acid. Characteristics of the enzyme system are an apparent K m value for orotate of 17 μ
W. Rattke, G.-J. Krauss
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Summary Orotidine-5′-phosphate: pyrophosphate-phosphoribosyltransferase and orotidine-5′-phosphate: carboxy-lyase were characterized in a crude extract from Euglena gracilis. Z The coupled enzyme reaction was measured by 14 CO 2 release from [7- 14 C]-orotic acid. Characteristics of the enzyme system are an apparent K m value for orotate of 17 μ
W. Rattke, G.-J. Krauss
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Plant and Cell Physiology, 2002
Uridine diphospho-D-glucuronate carboxy-lyase (UDP-D-xylose synthase; EC 4.1.1.35), which catalyzes the conversion of UDP-D-glucuronate to UDP-D-xylose, was purified to apparent homogenity from pea (Pisum sativum L.) seedlings. The pH optimum for enzyme activity was around 5-6, and the activity was not affected by exogeneously supplied NAD+ and NADH ...
Masaru, Kobayashi +4 more
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Uridine diphospho-D-glucuronate carboxy-lyase (UDP-D-xylose synthase; EC 4.1.1.35), which catalyzes the conversion of UDP-D-glucuronate to UDP-D-xylose, was purified to apparent homogenity from pea (Pisum sativum L.) seedlings. The pH optimum for enzyme activity was around 5-6, and the activity was not affected by exogeneously supplied NAD+ and NADH ...
Masaru, Kobayashi +4 more
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L-Arginine carboxy-lyase of higher plants and its relation to potassium nutrition
Phytochemistry, 1963Abstract On a fresh weight basis the mean agmatine content was found to be eight times as high, and the mean L -arginine carboxy-lyase (arginine decarboxylase) activity twice as high in leaves of potassium-deficient barley plants as in leaves of normal barley plants. A range of other plant species was also shown to accumulate agmatine and putrescine
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International Journal of Biochemistry, 1994
1. The role of histidine on the decarboxylation of porphyrinogens of 7-, 6-, and 5-COOH III brought about by porphyrinogen carboxy-lyase (PCL) was studied. 2. For this purpose hepatic PCL from normal and hexachlorobenzene (HCB) treated rats were modified with diethylpyrocarbonate. 3.
S C, Billi de Catabbi +1 more
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1. The role of histidine on the decarboxylation of porphyrinogens of 7-, 6-, and 5-COOH III brought about by porphyrinogen carboxy-lyase (PCL) was studied. 2. For this purpose hepatic PCL from normal and hexachlorobenzene (HCB) treated rats were modified with diethylpyrocarbonate. 3.
S C, Billi de Catabbi +1 more
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Archives of Biochemistry and Biophysics, 1972
Abstract Partially purified sonic extract of Ampullariella digitata strain 399 converted UDPGlcUA or UDPGalUA to a mixture of UDPGalUA, UDPGlcUA, UDPXyl and UDPAra. However, the extract did not catalyze the reaction: UDPXyl ⇄ UDPAra. In the presence of unlabeled UDPXyl, UDP-[ 14 C]GlcUA yielded only UDP-[ 14 C]Xyl, and UDP-[ 14 C]GalUA yielded only
D F, Fan, D S, Feingold
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Abstract Partially purified sonic extract of Ampullariella digitata strain 399 converted UDPGlcUA or UDPGalUA to a mixture of UDPGalUA, UDPGlcUA, UDPXyl and UDPAra. However, the extract did not catalyze the reaction: UDPXyl ⇄ UDPAra. In the presence of unlabeled UDPXyl, UDP-[ 14 C]GlcUA yielded only UDP-[ 14 C]Xyl, and UDP-[ 14 C]GalUA yielded only
D F, Fan, D S, Feingold
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Tetrapyrroles as substrates and inhibitors of porphyrinogen carboxy - lyase from rat liver.
Acta physiologica latino americana, 1978Porphyrinogen carboxy-lyase is an enzyme of the haem pathway which catalyses the stepwise decarboxylation of porphyrinogens with different number of carboxyl groups. This enzyme has a low substrate specificity since at least eighteen porphyrinogens were proved to be decarboxylated by the enzyme.
L C, San Martín de Viale +2 more
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Research communications in chemical pathology and pharmacology, 1986
In order to examine inhibitory effects of hexachlorobenzene metabolites on the hepatic porphyrinogen carboxylyase activity, rat liver cytosol was incubated with uroporphyrinogen III and chlorinated phenols, thiophenols, thioanisoles and benzenes. Then, the occurrence of hepta-, hexa-, penta- and tetracarboxyporphyrinogen = coproporphyrinogen (measured ...
S C, Billi +2 more
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In order to examine inhibitory effects of hexachlorobenzene metabolites on the hepatic porphyrinogen carboxylyase activity, rat liver cytosol was incubated with uroporphyrinogen III and chlorinated phenols, thiophenols, thioanisoles and benzenes. Then, the occurrence of hepta-, hexa-, penta- and tetracarboxyporphyrinogen = coproporphyrinogen (measured ...
S C, Billi +2 more
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