Results 141 to 150 of about 2,753 (185)
Purification and some properties of L-tyrosine carboxy-lyase from barley roots
Plant and Cell Physiology, 1974 Kazuo Hosoi
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Studies on Porphyrinogen Carboxy-Lyase from Chick Embryo Liver
Enzyme, 1984The purpose of the present work was to find the optimal conditions for the assay of chick embryo liver porphyrinogen carboxy-lyase. The enzyme activity was studied as a function of protein and substrate concentrations, time, pH value and incubation temperature.
M C, Taira, L C, San Martín de Viale
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Stereochemistry of porphyrinogen carboxy-lyase reaction in haem biosynthesis
Journal of the Chemical Society, Chemical Communications, 1975Stereospecifically deuteriated and tritiated succinate was incorporated into the acetate residues of uroporphyrinogen III which on decarboxylation generated asymmetric methyl groups in coproporphyrinogen III and then in haem; degradation of the latter yielded chiral acetate deriving from the C and D rings of haem and configurational analysis of this ...
Graham F. Barnard, Muhammad Akhtar
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Clinica Chimica Acta, 1980
Red cell porphyrinogen carboxy-lyase activity was measured using uroporphyrinogen III as substrate in 18 normal persons, 7 male patients with porphyria cutanea tarda, 3 female patients with erythropoietic protoporphyria and 2 female patients with variegate porphyria.
M C, Ríos de Molina +3 more
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Red cell porphyrinogen carboxy-lyase activity was measured using uroporphyrinogen III as substrate in 18 normal persons, 7 male patients with porphyria cutanea tarda, 3 female patients with erythropoietic protoporphyria and 2 female patients with variegate porphyria.
M C, Ríos de Molina +3 more
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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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IARC scientific publications, 1987
This study aimed to determine whether drug treatment produced structural changes in porphyrinogen carboxy-lyase enzymatic protein, leading to altered properties. Rat-liver enzyme was obtained from normal animals and from those with hexachlorobenzene (HCB)-induced porphyria, and several of its properties were comparatively studied. The enzymes from both
M del C, Ríos de Molina +2 more
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This study aimed to determine whether drug treatment produced structural changes in porphyrinogen carboxy-lyase enzymatic protein, leading to altered properties. Rat-liver enzyme was obtained from normal animals and from those with hexachlorobenzene (HCB)-induced porphyria, and several of its properties were comparatively studied. The enzymes from both
M del C, Ríos de Molina +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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1979
Publisher Summary This chapter describes the enzyme phosphopantothenoylcysteine decarboxylase from horse liver. The method is based on the measurement of 14 CO 2 released from 4'-phosphopantothenoyl-L- [U- 14 C ]cysteine. L-Cysteine in 15 ml of H 2 O are mixed with 0.1 mCi of L-[U- 14 C]cysteine and brought to pH 9.6 with 1 N NaOH, under a flow of ...
Roberto Scandurra +3 more
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Publisher Summary This chapter describes the enzyme phosphopantothenoylcysteine decarboxylase from horse liver. The method is based on the measurement of 14 CO 2 released from 4'-phosphopantothenoyl-L- [U- 14 C ]cysteine. L-Cysteine in 15 ml of H 2 O are mixed with 0.1 mCi of L-[U- 14 C]cysteine and brought to pH 9.6 with 1 N NaOH, under a flow of ...
Roberto Scandurra +3 more
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