The yeast TRP4 mRNA 3' end formation element is a bidirectional element which functions in both orien-tations in an artificial in vivo test system. In this study, the role of 3' end formation was analysed in the context of the entire TRP4 gene. The 3' untranslated region (3'UTR) of TRP4 was altered and changes were analysed for their influence on TRP4 gene expression. The 3'UTR in reverse orien...

background: hepatitis c is a global health problem. the exact mechanisms by which hepatitis c virus (hcv) can evade the host immune system have become controversial. whether hcv polyproteins modulate ifn signalling pathways or hcv proteins are responsible for such a property is the subject of interest. therefore, an efficient baculovirus delivery system was developed to introduce the whole geno...

Cleavage and polyadenylation of eukaryotic mRNA requires efficiency and positioning elements in the 3'-untranslated region (3'-UTR) of the mRNA. Specific point mutations were introduced into the yeast GCN4 3'-UTR to detect sequence motifs which are involved in the positioning of the poly(A) site. 3'-End proces-sing activities of different GCN4 3'-UTR alleles were measured in an in vivo test sys...

The presence of cellular factors that bind to the 3' untranslated region (UTR) of picornaviruses was investigated by electrophoretic mobility shift assays (EMSAs). A cellular factor(s) that binds specifically the 3' UTR of polio-, coxsackie- and rhinoviruses was detected. Furthermore, this factor(s) is distinct from those which bind to the 5' terminal 88 nt (the 'cloverleaf') of poliovirus. Mut...

Translocations involving the Mixed Lineage Leukemia (MLL) gene generate in-frame fusions of MLL with more than 50 different partner genes (PGs). Common to all MLL translocations is the exchange not only of coding regions, but also of MLL and PG 3'-untranslated regions (3'UTRs). As a result, the MLL-PG fusion is normally highly expressed and considered the main driver of leukemia development, wh...

Mutations in the breast cancer susceptibility genes, BRCA1 and BRCA2, represent the majority of the known familial breast cancer risk, yet account for only 20% of the total risk. As BRCA1 is a large gene, genetic screening of high-risk individuals is limited to the coding regions and intron-exon boundaries, which precludes the identification of mutations in non-coding and untranslated (UTR) reg...

Porcine reproductive and respiratory syndrome virus (PRRSV) is a significant pathogen causing substantial financial losses in the global swine industry. The prevention of PRRSV hampered due to frequent gene recombination among different strains PRRSV. In this study, new strain, PRRSV-HQ-2020, was identified from nursery piglets Yunnan Province, China, 2020. complete genome analysis revealed tha...

Objective: To investigate the expression of miR-642 in gastric cancer and its mechanism proliferation migration. Methods: qRT-PCR was used to detect cancer. Dual luciferase gene reporting system verify direct regulatory effect on KRT19 3' UTR. The mRNA protein levels after transfection were detected by Western blot. IncucyteS long term dynamic cell observation. Kaplan-Meier method analyze relat...