Search results for "C11"
showing 10 items of 59 documents
Properties of the yeast nuclear histone deacetylase.
1994
A nuclear histone deacetylase from yeast was partially purified and some of its characteristics were studied. Histone deacetylase activity was stimulated in vitro by high-mobility-group nonhistone chromatin proteins 1 and 2 and ubiquitin and inhibited by spermine and spermidine, whereas n-butyrate had no significant inhibitory effect. Like the mammalian enzyme, partially purified histone deacetylase from yeast was strongly inhibited by trichostatin A. However, in crude extract preparations the yeast enzyme was not inhibited and treatment with trichostatin in vivo did not show any effect, either on the histone acetylation level or on cell viability. At low ionic strength, the enzyme can be i…
QUASI QUIDAM ORNATUS VITAE. Il decorum nel de officiis di Cicerone
2013
The theory of decorum in Cicero’s de officiis (44 BC) seems to suggest to the Romans not simply the fourth virtue of a general system of conduct, but a super-virtue able to act as a “shock absorber” in the exercise of social and political life, summarized in a principle that Cicero defines as verecundiae partes, that is non offendere homines. Thus, while Romans citizens suffer the most radical crisis of their history, he indicates the decorum as the backbone of the complex architecture that constitutes the common good. In this paper I argue that Cicero’s contribution to the political and theoretical discussion on justice and respect may bring a very helpful tool for rethinking critically th…
Structural variability of 3C 111 on parsec scales
2011
We discuss the parsec-scale structural variability of the extragalactic jet 3C 111 related to a major radio flux density outburst in 2007. The data analyzed were taken within the scope of the MOJAVE, UMRAO, and F-GAMMA programs, which monitor a large sample of the radio brightest compact extragalactic jets with the VLBA, the University of Michigan 26 m, the Effelsberg 100 m, and the IRAM 30 m radio telescopes. The analysis of the VLBA data is performed by fitting Gaussian model components in the visibility domain. We associate the ejection of bright features in the radio jet with a major flux-density outburst in 2007. The evolution of these features suggests the formation of a leading compo…