The expression of ribosomal protein (r-protein) genes is uniquely regulated at the translational level during early development of Drosophila. Here we report results of a detailed analysis of the r-protein rpA1 gene. A cloned DNA sequence coding for rpA1 has been identified by hybrid-selected translation and amino acid composition analysis. The rpA1 gene was localized to polytene chromosome ban...

In this study, we systematically examined in vitro frequencies and spectra of the spontaneous mutations in Helicobacter pylori that confer resistance to clarithromycin (Cla(r)), metronidazole (Mtz(r)), amoxicillin (Amx(r)), ciprofloxacin (Cip(r)), and rifampin (Rif(r)). The mutation rate of Rif(r) or Cip(r) determined in a fluctuation assay is 1 x 10(-8) to 2 x 10(-8) per cell per division. In ...

Abstract We analyzed the expression of ACE2 in pharyngeal epithelium and examined its relationship with clinical features serological parameters patients upper respiratory infection (URI). The level gene was significantly higher URI (n = 125) than healthy control (HC) individuals 52) (p < 0.0001). positively correlated age (r=0.1799, p 0.0447) body temperature (r=0.1927, ...

IN THE TITLE COMPOUND (SYSTEMATIC NAME (R)-dimeth-yl{2-[1-phenyl-1-(pyridin-2-yl)eth-oxy]eth-yl}aza-nium (R,R)-3-carb-oxy-2,3-dihy-droxy-propano-ate), C(17)H(23)N(2)O(+)·C(4)H(5)O(6) (-), the doxylaminium cation is protonated at the N atom. The tartrate monoanions are linked by short, almost linear O-H⋯O hydrogen bonds into chains extended along [100]. These chains are inter-linked by anion-pyr...

*Continuous planting of crops containing single disease resistance (R) genes imposes a strong selection for virulence in pathogen populations, often rendering the R gene ineffective. Increasing environmental temperatures may complicate R-gene-mediated disease control because high temperatures often promote disease development and reduce R gene effectiveness. Here, performance of one rice bacter...