obsolete suppression by virus of host PKR activity by positive regulation of PKR catabolic process true promotion by virus of proteosome-dependent PKR degradation biological_process bf The reason for obsoleting this term is that it is too specific. The exact molecular roles of the individual proteins should be captured separately. OBSOLETE. Any process in which a virus stops, prevents, or reduces the frequency, rate or extent of host PKR (protein kinase regulated by RNA) activity by promoting the degradation of PKR via the proteosome. For example, the Rift Valley fever virus (RVFV) NSs protein induces the down-regulation of PKR by degradation through proteasomes. GO:0039583 2012-05-02T02:49:30Z downregulation of PKR by degradation through proteosome