Browsing by Author "XX606894"
Now showing items 1-17 of 17
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(Universidad de ChileCyberDocs, 2010)La enzima piridoxal quinasa (PLK) pertenece a la familia de quinasas sin dominio menor de la superfamilia de la riboquinasa y cataliza la formación de piridoxal-5’-fosfato (PLP) a partir de piridoxal (PL) y de un complejo ...
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(Elsevier, 2018-05)Two strategies have been described for cold tolerance in arthropods: (1) freeze-tolerant organisms, which can survive the formation of ice crystals and (2) freeze-avoidant organisms, which prevent the ice crystal formation ...
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(Elsevier, 2016)The interest of the pharmaceutical industry in developing new antibiotics is decreasing, as established screening systems which identify compounds that kill or inhibit the growth of bacteria can no longer be used. Consequently, ...
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(2003)The binding of MgATP and fructose-6-phosphate to phosphofructokinase-2 from Escherichia coli induces conformational changes that result in significant differences in the x-ray-scattering profiles compared with the unligated ...
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(AMER CHEMICAL SOC,, 2006-04-20)Phosphofructokinase-2 (Pfk-2) from Escherichia coli belongs to the ribokinase family of sugar kinases. One of the signatures observed in amino acid sequences from the ribokinase familiy members is the NXXE motif, which ...
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(Elsevier, 2020)Carotenoids are plastid isoprenoid pigments that play critical roles in light harvesting, photoprotection, and phytohormone biosynthesis. They are also vitamin-A precursors and antioxidant molecules important for human ...
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(2002)Binding of MgATPto the allosteric site of phosphofructokinase-2 promotes a dimer to tetramer conversion. In the presence of Fru-6-Pthe enzyme remains as a dimer. Limited proteolysis in the presence of MgATPcompletely ...
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(2012)Xanthophyllomyces dendrorhous is a natural source of astaxanthin, a carotenoid widely used in the food industry. In this yeast, astaxanthin is synthesized from β-carotene by a cytochrome P450, CrtS, which depends on CrtR, ...
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(Frontiers Research Foundation, 2015)© 2015 Aguayo, Cáceres, Fuentealba, Muñoz, Stange, Cabrera and Handford. Polyols are enzymatically-produced plant compounds which can act as compatible solutes during periods of abiotic stress. Nicotinamide adenine ...
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(ELSEVIER SCIENCE INC, 2010-06-25)Phosphofructokinase-2 (Pfk-2) belongs to the ribokinase family and catalyzes the ATP-dependent phosphorylation of fructose-6-phosphate, showing allosteric inhibition by a second ATP molecule. Several structures have been ...
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(ELSEVIER SCIENCE BV, 2005-04-25)In a previous work, chemical modification of Cys-238 of Escherichia coli Pfk-2 raised concerns on the importance of the dimeric state of Pfk-2 for enzyme activity, whereas modification of Cys-295 impaired the enzymatic ...
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(2012)In Escherichia coli, the pentose phosphate pathway is one of the main sources of NADPH. The first enzyme of the pathway, glucose-6-phosphate dehydrogenase (G6PDH), is generally considered an exclusive NADPH producer, but ...
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(2011)Substrate inhibition by ATP is a regulatory feature of the phosphofructokinases isoenzymes from Escherichia coli (Pfk-1 and Pfk-2). Under gluconeogenic conditions, the loss of this regulation in Pfk-2 causes substrate ...
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(Sociedad de Biologia de Chile, 2005)
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(Universite Paris-Sud, 2018)It has been proposed that NADP+ -specificity of isocitrate dehydrogenase (ICDH) evolved as an adaptation of microorganisms to grow on acetate as the sole source of carbon and energy. In Escherichia coli, changing the ...
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Unfolding pathway of the dimeric and tetrameric forms of phosphofructokinase-2 from Escherichia coli (2007)Escherichia coli phosphofructokinase-2 (Pfk-2) is an oligomeric enzyme characterized by two kinds of interfaces: a monomer-monomer interface, critical for enzymatic activity, and a dimer-dimer interface formed upon ...
