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Mol Cell Biol. 1987 February; 7(2): 821-829

Different functional domains of the adenovirus E1A gene are involved in regulation of host cell cycle products.

B Zerler, R J Roberts, M B Mathews and E Moran

ABSTRACT

We have analyzed the cell cycle effects that different domains of the adenovirus E1A proteins have on quiescent primary BRK cells. Studies with deletion mutants that in combination removed all but the N-terminal 85 amino acids common to both the 12S and 13S proteins suggest that this region may be sufficient for the induction of synthesis of proliferating cell nuclear antigen and the stimulation of DNA synthesis. A second domain also common to the N-terminal exon of the 12S and 13S proteins was required for the induction of mitosis and stimulation of proliferation of primary BRK cells. A virus containing a mutation in this region was still able to stimulate DNA synthesis efficiently. A third domain, unique to the 13S protein, was required for the accelerated activation of the cellular thymidylate synthase gene in a manner similar to the 13S-dependent stimulation of adenovirus early region genes.


Mol Cell Biol. 1987 February; 7(2): 821-829




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