Não conhecido detalhes sobre noticiasAt sufficiently low temperatures, it is experimentally shown that the thermal capacity of the solids decreases appreciably and vanishes in the limit of zero absolute temperature. This behavior however does not necessarily follow from the laws of thermodynamics seen so far.
Endo-β-1, 4-mannanase from Thermotoga petrophila (TpMan) is a modular hyperthermo-stable enzyme involved in the degradation of mannan-containing polysaccharides. The degradation of these polysaccharides represents a key step for several industrial applications. Here, as part of a continuing investigation of TpMan, the region corresponding to the GH5 domain (TpManGH5) was characterized as a function of pH and temperature. The results indicated that the enzymatic activity of the TpManGH5 is pH-dependent, with its optimum activity occurring at pH 6. At pH oito, the studies demonstrated that TpManGH5 is a molecule with a nearly spherical tightly packed core displaying negligible flexibility in solution , and with size and shape very similar to crystal structure. However, TpManGH5 experiences an increase in radius of gyration in acidic conditions suggesting expansion of the molecule. Furthermore, at acidic pH values, TpManGH5 showed a less globular shape, probably due to a loop region slightly more expanded and flexible in solution (residues Y88 to A105).
Usando a liberação por saques do fundo de garantia e do PIS-Pasep, governo pretende injetar Ainda mais por R$ 60 bilhões pelo Comércio para tentar alavancar o crescimento do País
Es una organización superviviente porque se ha adaptado a los cambios y ha mostrado un notable grado do flexibilidad
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We have determined the thermal conductance of a system consisting of a two-level atom coupled to two quantum more info harmonic oscillators in contact with heat reservoirs at distinct temperatures.
Endo-β-1,4-mannanase from Thermotoga petrophila (TpMan) is a hyperthermostable enzyme that catalyzes the hydrolysis of β-1,4-mannoside linkages in various mannan-containing polysaccharides. A recent study reported that TpMan is composed of a GH5 catalytic domain joined by a linker to a carbohydrate-binding domain. However, at this moment, there is no three-dimensional structure determined for TpMan. Little is known about the conformation of the more info TpMan as well as the role of the length and flexibility of the linker on the spatial arrangement of the constitutive domains. In this study, we report the first structural characterization of the entire TpMan by small-angle X-ray scattering combined with the three-dimensional structures of the individual domains in order to shed light on the low-resolution model, overall dimensions, and flexibility of this modular enzyme at different temperatures.
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Sociedad y Cultura El niño de que fue secuestrado de modo a ser el lazarillo de mendigos El niño de que fue secuestrado para ser el lazarillo de mendigos
During his basic studies, he already showed a great interest in zoology, but due to the lack of a higher education in conterraneo sciences in the city, he studied medicine in the Faculdade por Medicina da Bahia, the first medical school to be founded in Brazil. He concluded his studies in 1921 at the age of 25.
Ciudadanos estadounidenses con ascendencia japonesa y nativos americanos se unen a las protestas para evitar de que utilicen las instalaciones de la more info base aérea por Fort Sill para detener a niños migrantes.
A system in thermodynamic equilibrium must be stable. This means to say that small perturbations do not remove the system from its equilibrium.