Citrate Precursor
Mostrando 13-24 de 43 artigos, teses e dissertações.
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13. Síntese, sinterização e caracterização de ferritas à base de Ni-Zn
Were synthesized different ferrites NixZn1-xFe2O4 (0,4 ≤ x ≤ 0,6) compositions by using citrate precursor method. Initially, the precursors citrates of iron, nickel and zinc were mixed and homogenized. The stoichiometric compositions were calcined at 350C without atmosphere control and the calcined powders were pressed in pellets and toroids. The
Publicado em: 2008
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14. Síntese e caracterização da ferrita de MnZn obtida pelo método dos citratos precursores
It was synthesized MnZn ferrite with general formulae Mn1-xZnxFe2O4 (mol%), 0,3 ≤ x ≤ 0,7 by using the citrate precursor method. The precursors decomposition was studied by thermogravimetric analysis (TGA), differential thermogravimetric analysis (DTG), differential thermal analysis (DTA) and Fourier transform infrared (FTIR) of powder calcined a
Publicado em: 2007
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15. Influência da terapia laser de baixa intencidade em células precursoras miogênicas (in vitro) e durante a regeneração muscular (in vivo).
The Low Intensity Laser Therapy (LILT) constitutes one of the resources most used by physical therapists, with the goal of stimulating the process of repairing the skeleton muscle tissue. On the other hand, the intense utilization, its respective action mechanisms and therapeutic effectiveness are not scientifically proved. Based on this, we elaborated the p
Publicado em: 2004
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16. Estudo do equilibrio liquido-liquido, da partição de insulina e da pre-purificação da proteina de fusão precursora da insulina humana em sistemas aquosos bifasicos do tipo PEG/Sal / Study of liquid-liquid equilibrium, the partition of insulin and pre-purification of the fusion protein precursor of human insulin in aqueous biphasic systems of the type PEG / salt
In this work the primary purification of a fusion protein precursor of human insulin and produced by recombinant E. coli has been studied using aqueous two-phase systems. The fusion protein was provided by the pharmaceutical company Biobrás S.A (Montes Claros/Brazil) and was dissolved in 8M area. Partitioning essays of fusion protein were investigated in th
Publicado em: 2003
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17. Derepression of citrate synthase in Saccharomyces cerevisiae may occur at the level of transcription.
Pulse-chase labeling in whole cells and cell-free protein synthesis were used to establish that the mitochondrial enzyme citrate synthase is made as a larger precursor in Saccharomyces cerevisiae. A 54,000 Mr precursor form appeared to be a primary translation product since it could be labeled with N-[35S]formylmethionine in vitro. The induction of citrate s
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18. Targeting and processing of a chimeric protein with the N-terminal presequence of the precursor to glyoxysomal citrate synthase.
Glyoxysomal citrate synthase in pumpkin is synthesized as a precursor that has a cleavable presequence at its N-terminal end. To investigate the role of the presequence in the transport of the protein to the microbodies, we generated transgenic Arabidopsis plants that expressed beta-glucuronidase with the N-terminal presequence of the precursor to the glyoxy
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19. Randomised double blind trial of hypotonic oral rehydration solutions with and without citrate.
Hypotonic oral rehydration salts solutions (ORS) have been proved to be better than isotonic solutions with respect to water absorption. To establish whether a base precursor is essential in the composition of a hypotonic ORS with improved absorption properties, a randomised double blind clinical trial was conducted comparing two formulas of hypotonic ORS, e
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20. Photosynthesis in the Higher Plant Vicia faba: V. Role of Malate as a Precursor of the Tricarboxylic Acid Cycle 1
In the higher plant Vicia faba, anomalous labeling patterns in the organic acids and related amino acids of the tricarboxylic acid cycle which result from photosynthetic 14CO2 fixation (in conjunction with an enzyme localization pattern unique to plant mitochondria) suggest that the tricarboxylic acid cycle functions primarily as a pathway leading to glutami
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21. ROLES OF CITRATE AND ACETOIN IN THE METABOLISM OF STREPTOCOCCUS DIACETILACTIS
Harvey, R. J. (University of California, Davis), and E. B. Collins. Roles of citrate and acetoin in the metabolism of Streptococcus diacetilactis. J. Bacteriol. 86:1301–1307. 1963.—Streptococcus diacetilactis was unable to use citrate as a source of energy for growth, but the addition of citrate to a lactose-containing medium increased the specific growt
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22. On the Metabolic Relationship between the Calvin Cycle and the Tricarboxylic Acid Cycle: IV. A Plant Survey for Anomalous Acetyl Coenzyme A 1
Leaves of 10 randomly selected plants representing eight dicotyledonous families were exposed to 14CO2 for a 10-minute period in the light. Citrate and alanine were isolated, purified isotopically, and degraded to obtain the 14C-isotope distribution of corresponding carbon atoms, i.e. citrate (C-1,2) and alanine (C-2,3). The cited carbon atoms of alanine wer
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23. Polypeptide involved in the Escherichia coli plasmid-mediated citrate transport system.
A genetic determinant conferring on Escherichia coli the ability to utilize citrate as a sole source of carbon and energy was subcloned into pBR322 from a naturally occurring, citrate utilization (Cit+) plasmid, pOH30221, and was localized to a 1.6-kilobase region by cloning and subsequent deletion analysis. Genetic expression of the Cit+ determinant in E. c
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24. Proton motive force generation by citrolactic fermentation in Leuconostoc mesenteroides.
In Leuconostoc mesenteroides subsp. mesenteroides 19D, citrate is transported by a secondary citrate carrier (CitP). Previous studies of the kinetics and mechanism of CitP performed in membrane vesicles of L. mesenteroides showed that CitP catalyzes divalent citrate HCit2-/H+ symport, indicative of metabolic energy generation by citrate metabolism via a seco