Abstract
Bovine viral diarrhea virus RNA was translated in a reticulocyte cell-free protein synthesizing system. The purified, 8.2-kilobase, virus-specific RNA species was unable to serve an an efficient message unless it was denatured immediately before translation. In this case, several polypeptides, ranging in molecular weight from 50,000 to 150,000 and most of which were immunoprecipitated by bovine viral diarrhea virus-specific antiserum, were synthesized in vitro. When polyribosomes were used to program cell-free synthesis, mature viral 80,000- and 115,000-molecular-weight proteins were detected; no precursor to the viral 55,000-molecular-weight glycoprotein was noted. The implications of these results with respect to virus-specific protein synthesis are discussed.
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