Box C/D RNAs are small, noncoding RNAs that function in RNA modification in eukaryotes and archaea. Here, we report that box C/D RNAs exist in the rare biological form of RNA circles in the hyperthermophilic archaeon Pyrococcus furiosus. Northern analysis of box C/D RNAs reveals two prominent RNA species of different electrophoretic mobilities in total P. furiosus RNA preparations. Together, th...

Background: RhD antigen system is the leading cause of hemolytic disease of the fetus and newborn (HDFN). Paternal molecular RhD zygosity test is valuable to decide on the use of anti-D immunoglobulin prophylaxis in Rh D-negative pregnant women. We aimed to investigate the paternal RhD zygosity by two molecular methods among blood donors in Kurdistan province, the west of Iran. We also compared...

Sulfur mustard (SM) is a strong alkylating and mutagenic compound that targets humanairway system. We considered the expression of Forkhead box M1 (FOXM1) and apolipoproteinE (APOE) genes, which are responsible for cell proliferation, differentiation, tumorigenesis,and increased risk of lung cancer, in the lung bronchial tissue of patients exposed to SM.After performing pulmonary functional tes...

objectives : optimum viewing conditions facilitate identification of radiographic details and decrease the need for retakes, patients’ costs and radiation dose. this study sought to evaluate the effects of different viewing conditions on radiographic interpretation. materials and methods: this diagnostic study was performed by evaluating radiograph of a 7mm-thick aluminum block, in which 10 hol...

E3 ubiquitin ligases determine the substrate specificity of ubiquitination. Plant U-box (PUB) E3 ligases, with a typical 70-amino acid U-box domain, participate in plant developmental processes and environmental responses. Thus far, 64 PUB proteins have been identified in Arabidopsis and 77 PUB proteins have been identified in Oryza. However, detailed studies on U-box genes in the model microal...

The intergenic spacer region between the 16S and 23S rRNA genes of Mycoplasma haemomuris, previously classified as 'Haemobartonella muris', was amplified by PCR and sequenced for analysis of the primary and secondary structures of the RNA transcript. The spacer region consisted of 219 base-pairs and lacked the spacer tRNA gene. A hypothetical secondary structure predicted in the RNA transcript ...