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Proteins synthesized in tobacco mosaic virus infected protoplasts

, : Proteins synthesized in tobacco mosaic virus infected protoplasts. Mededelingen Landbouwhogeschool Wageningen 79(15): 1-103

Cowpea and tobacco protoplasts (Vigna unguiculata and Nicotiana tabacum, respectively) were used to study the role of proteins in tobacco mosaic virus (TMV) multiplication. Proteins were analyzed by sodium dodecyl sulfate polyacrylamide slabgel electrophoresis and the polypeptide patterns were visualized by autoradiography. Ten polypeptides which were synthesized as a result of TMV multiplication were distinguished in tobacco. Based on their MW, these polypeptides were either absent or much reduced in mock-infected protoplasts. Similarly, 8 such polypeptides were distinguished in cowpea. Two of the polypeptides and coat protein were common to both host species, indicating they were encoded in the TMV RNA. Apparently one of these polypeptides was involved in the synthesis of TMV RNA.


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