Expression in Escherichia coli of a fusion protein product containing a region of the adenovirus DNA polymerase.


The bulk of an open reading frame extending from map coordinates 23.3 ...
The bulk of an open reading frame extending from map coordinates 23.3 to 14.2 in region E2b of the adenoviral genome has been cloned and expressed from a chimeric plasmid in Escherichia coli. The cloning strategy used created a fusion protein of 124,000 daltons, which contained greater than 98% adenovirus-encoded sequences. Antiserum raised against this protein reacted with the authentic 140,000-dalton adenovirus DNA polymerase. Another serum raised against a synthetic hexapeptide whose sequence corresponded to the predicted carboxyl terminus of adenovirus-encoded DNA polymerase also reacted with the fusion protein and authentic adenovirus DNA polymerase. These results demonstrate that the cloned region of DNA encodes the adenovirus DNA polymerase.




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