Results 141 to 150 of about 11,907 (183)
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L-glutaminase Activity of Organic Amendments
2011High contents of organic matter are present in composts of urban wastes, part of which are easily hydrolysable and mineralisable by soil microorganisms. The metabolic use of this organic fraction depends on the activity of hydrolytic enzymes produced by soil microbial communities, especially those related with N cycle, in which L-glutaminase plays an ...
Juana Isabel López +3 more
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Effect of L-Glutaminase on Transformation and DNA Synthesis of Normal Lymphocytes
Acta Haematologica, 2009The transformation of lymphocytes by phytohemagglutinin and the uptake of thymidine by DNA are completely inhibited by 17 mlU/ml L-glu taminase GA:1.2. The transformation is also inhibited by 1,700 mlU EC2 L-asparaginase/ml, which is estimated to have 34 mlU/ml of L-glutaminase activity.Therefore, glutamine deficiency may be responsible for the ...
R, Schrek +4 more
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Reinvestigation of the physicochemical and enzymic properties of l-glutaminase from Pseudomonas
Biochimica et Biophysica Acta (BBA) - Enzymology, 1974Abstract In a previous study ((1972) Biochim. Biophys. Acta 289, 405–409) l -glutaminase (EC 3.5.1.2) was crystallized from Pseudomonas (ATCC 21025). The specific activity of this enzyme decreased rather rapidly during incubation in aqueous solution.
T, Abe, O, Takenaka, Y, Inada
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L-Glutaminase: Suppression of Lymphocyte Blastogenic Responses in vitro
Science, 1971Continuous exposure to 0.1 international unit or more of Escherichia coli L-glutaminase inhibited responses of human lymphocytes to phytohemagglutinin, streptolysin O, and allogeneic leukocytes. Inhibition was completely reversed by removing the enzyme from the culture or addingL-glutamine but not L-asparagine ...
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l-Glutaminase activity in lymphocytes of patients with chronic lymphatic leukemia
Clinica Chimica Acta, 1974Abstract Endogenous l -glutaminase and l -asparaginase were determined in extracts from leukocytes of patients with chronic lymphatic and chronic myeloid leukemia and from normal volunteers. l -Glutaminase was found only in extracts of lymphocytes from chronic lymphatic leukemia, the mean activity being 5.10 −2 I.U./mg protein. In these cells no
H, Desser, P, Höcker
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Bio-prospecting the future in perspective of amidohydrolase L-glutaminase from marine habitats
Applied Microbiology and Biotechnology, 2021In the current scenario, considerable attention is being given to the enzyme L-glutaminase (EC 3.5.1.2). It belongs to the amidohydrolase class adherent to the family of serine-reliant β-lactamases and the penicillin-binding proteins due to its higher affinity to polymerize and modify peptidoglycan synthesis. However, based on the catalytic proficiency,
Nidhi Y. Patel +5 more
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Kinetics and Properties of L-Glutaminase and L-Asparaginase Activities of Pseudomonas ovalis
Zentralblatt für Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene. Zweite Naturwissenschaftliche Abteilung: Allgemeine, Landwirtschaftliche und Technische Mikrobiologie, 1976Pseudomonas ovalis produces L-glutaminase and L-asparaginase activities simultaneously upon induction by L-glutamine or L-asparagin in the growth medium. Both activities are confined to the cell during active growth and are not released into the medium.
S M, Badr El-Din, M S, Foda
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Production of a bacterial extracellular L-glutaminase possessing high antioxidant capability
Egyptian Pharmaceutical Journal, 2021Background and objectives L-glutaminase has utmost practical importance in many fields, such as medicine, pharmacy, and some industries as an effective antioxidant, anticancer, flavor enhancer, and used as an analytical reagent in the determination of glutamate and glutamine.
Sara M. El-Sousy +3 more
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Journal of Molecular Biology, 1977
Single crystals of glutaminase-asparaginase from two sources have been grown. A new crystal form (III) of Acinetobacter enzyme belongs to the space group I222, a = 96·7 , b = 112·4and c = 70·9 , with one subunit in the asymmetric unit. Crystals of Pseudomonas 7A enzyme belong to the space group P212121, a = 118·0 , b = 131·2and c = 85·1 , with a ...
A, Wlodawer, J, Roberts, J S, Holcenberg
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Single crystals of glutaminase-asparaginase from two sources have been grown. A new crystal form (III) of Acinetobacter enzyme belongs to the space group I222, a = 96·7 , b = 112·4and c = 70·9 , with one subunit in the asymmetric unit. Crystals of Pseudomonas 7A enzyme belong to the space group P212121, a = 118·0 , b = 131·2and c = 85·1 , with a ...
A, Wlodawer, J, Roberts, J S, Holcenberg
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Analytical Biochemistry, 1982
Abstract An assay for the determination of l -glutaminase in extracts and intact cells is described. The method is based on the stereospecific release of 3 H 2 O from l -[2- 3 H]glutamine when l -glutaminase is coupled to l -aspartate:2-oxoglutarate amino transferase.
C L, Zielke, H R, Zielke, P T, Ozand
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Abstract An assay for the determination of l -glutaminase in extracts and intact cells is described. The method is based on the stereospecific release of 3 H 2 O from l -[2- 3 H]glutamine when l -glutaminase is coupled to l -aspartate:2-oxoglutarate amino transferase.
C L, Zielke, H R, Zielke, P T, Ozand
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