in this paper, we consider rna structures with arc-length 4 . first, we represent thesestructures as matrix models and zero-one linearprogramming problems. then, we obtain anoptimal solution for this problemusing an implicit enumeration method. the optimal solutioncorresponds toan rna structure with the maximum number of hydrogen bonds.

breast carcinoma is the major cause of cancer-related death in women. the incidence of this carcinoma is rising and there are many attempts to decrease this problem. the aim of this study was detection of full-length cytokeratin 19 (ck19) mrna, in peripheral blood and tissue of breast cancer patients in early stage of cancer. in this study, rt-pcr (reverse transcriptase-polymerase chain reactio...

objectives: this current research was conducted in order to analyze the molecular characterization of isolated cryptosporidium spp. in the southwest of iran. materials and methods: in this survey, 390 fecal samples were collected from immunocompromised individuals and children under five-years-of-age. parasitic infection was evaluated using wet mount preparation, formalin ether, a modified acid...

Die Frage, wie sich die RNA als ein Träger der genetischen Information entwickelt hat, ist von grundlegender Bedeutung für unser Verständnis des Ursprungs Lebens. Das RNA-Molekül viel zu komplex, das es in einem einzigen Evolutionsschritt hat entstehen können, was darauf hindeutet, dass Proto-RNAs (erste Vorläufer RNA) gegeben haben könnte, im Laufe Zeit heutigen haben. Hier zeigen wir, Isoxazo...

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It is commonly understood that RNA-binding proteins crucially determine the fate of their target RNAs. Vice versa, RNAs are becoming increasingly recognized for functions in protein regulation and dynamics RNA-protein complexes. Long non-coding emerging as potent regulators exert unknown properties moonlighting functions. A vast array RNA- protein-centric techniques have been developed identifi...

background:in the recent decade, the reverse genetics method has been broadly used for rescue of negative-stranded rna viruses from cdna or viral minigenomes. this technique has been applied to study different steps in virus replication and virus-host interactions. reverse genetics could also be implemented for design of new vaccines. the t7 rna polymerase activity as well as virus (nucleocapsi...