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Deletion mapping of moloney type C virus: polypeptide and nucleic acid expression in different transforming virus isolates

The viral polypeptides and viral RNA present in cells transformed by various replication-defective type C viruses derived from Maloney murine leukemia virus were examined. Different portions of the Maloney type C viral genome were retained in the different transforming viruses, thus providing an opportunity for deletion mapping of the Moloney type C genome. DNA transcripts were prepared that are complementary to three distinct nonoverlapping portions of the Moloney viral geonome. Based on an anlysis of the polypeptides produced in the different transformed cells, one complementary DNA apparently respresents sequences coding for Moloney gp70; one complementary DNA represents a region of the Moloney genome common to all of the transforming viruses examined, and one complementary DNA represents the sequences for p30, p15, p10,12. A partial map of the different replication-defective transforming viruses is suggested.