Pseudouridine 55 synthase (Psi55S) catalyzes isomerization of uridine (U) to pseudouridine (Psi) at position 55 in transfer RNA. The crystal structures of Thermotoga maritima Psi55S, and its complex with RNA, have been determined at 2.9 and 3.0 A resolutions, respectively. Structural comparisons with other families of pseudouridine synthases (PsiS) indicate that Psi55S may acquire its ability t...

Acidithiobacillus ferrooxidans (A. ferrooxidans, formerly Thiobacillus ferrooxidans) is the Gram-negative, acidophilic, chemolithoautotrophic bacterium that obtains its energy from the oxidation of ferrous iron, elemental sulphur, or partially oxidized sulphur compounds (Leduc and Ferroni, 1994; Rohwerder et al., 2003), even hydrogen or formate in anoxic conditions (Drobner et al., 1990; Pronk ...

background: in the field of education, a great deal of quality improvement is remained to be achieved. assessment of educational courses appears to be necessary jor quality improvement in all curriculums, therefore studies for assessment of educational outcomes and impacts are of high priority. in a dentistry faculty, the mouth and dental health acre among dentistry students can be considered a...

Previous studies have revealed an increased fractional anisotropy and greater thickness in the anterior parts of the corpus callosum in meditation practitioners compared with control subjects. Altered callosal features may be associated with an altered inter-hemispheric integration and the degree of brain asymmetry may also be shifted in meditation practitioners. Therefore, we investigated diff...

This chapter surveys some recent work on the application of techniques from computational geometry to geometric problems arising in manufacturing processes such as layered manufacturing, mold design, and numerically controlled machining. Within each topic, we discuss problems that have benefited from the application of geometric techniques, and mention several other problems where such techniqu...

The objectives of this study were to determine the selection potential (genetic variation) of sow efficiency traits (prolificacy, longevity), to understand the co-responses (genetic correlations) among sow efficiency traits and other economically important traits (performance, carcass quality, and meat quality), and determine the feasibility of developing breeding value estimates for sow effici...