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Inhibitors of alpha glucosidases prevent the trimming of oligosaccharides on certain nascent glycoproteins, including the hepatitis B virus MHBs envelope glycoprotein. MHBs proteins with untrimmed oligosaccharides do not interact with calnexin, increasing protein misfolding and subsequent degradation by proteasomes. As peptides loaded onto newly synthesized MHC class I complexes are predominantly...
Recently, it was shown that replication of bovine viral diarrhea virus (BVDV) is sensitive to inhibitors of host ER glucosidases. Consistent with these findings, we report that incubation of BVDV-infected MDBK cells with the glucosidase inhibitor n-butyl-deoxynojirimycin (nB-DNJ) reduced BVDV yields by 70- to 100-fold (n = 27), while having no effect on MDBK cell viability. However, the 70- to 100-fold...
Herpes Simplex virus expresses latency-associated transcripts (LATs) the function of which remains obscure despite increasing knowledge of their structure and expression. Upstream of the LAT coding region is a region of the genome that is poorly characterized although it lies in an area that is responsible for modulation of reactivation efficiency in two different animal models. Transcript mapping...
We previously have shown that two latency-associated transcripts (LATs) of herpes simplex type 1 (HSV-1) are probably lariats, produced during splicing. By RNaseH digestion analysis, we now show that the major branchpoint of the 2.0-kb LAT was within 46 nt 5′ of the splice acceptor site. A more detailed mapping by primer extension revealed the branchpoint as an adenosine 29 nt 5′ of the splice acceptor...
The presence of wild-type herpes simplex virus type 1 (HSV-1) and several latency associated transcript (LAT) region mutants within the trigeminal ganglia (TG) of latently infected mice was examined. A combination of methods including conventionalin situhybridization to detect viral LAT and anin situDNA polymerase chain reaction (PCR) to detect viral DNA was used. These data show that, for all virus...
The presence of herpes simplex virus (HSV-1) DNA in the trigeminal ganglia of latently infected mice was detected byan in situ DNA polymerase chain reaction (PCR), which includes a DNA:DNA hybridization step (indirect in situ PCR). These results were compared to the number of neurons possessing the HSV-1 latency associated transcript (LAT), as detected by in situ RNA hybridization with LAT probes...
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