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Research Article

The t-unique coding domain is important to the transformation maintenance function of the simian virus 40 small t antigen.

I Bikel, H Mamon, E L Brown, J Boltax, M Agha, D M Livingston
I Bikel
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H Mamon
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E L Brown
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J Boltax
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M Agha
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D M Livingston
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DOI: 10.1128/MCB.6.4.1172
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ABSTRACT

The small t antigen (t) of simian virus 40, a 174-amino-acid-containing protein, when present together with the other early viral protein, large T antigen (T), plays an important role in the maintenance of simian virus 40-induced neoplastic phenotype in certain cells. Indeed, each protein functions in a complementary manner in this process. The t coding unit is composed of two segments, a 5' region of 246 nucleotides which is identical to that of the corresponding 5' region of the T coding unit and a 3' segment of 276 nucleotides which is unique. Two mutant, t-encoding genomes, one bearing a missense and the other a nonsense mutation at the same point in the t-unique coding region were constructed in vitro and found to be defective in their ability to dissolve the actin cytoskeleton of rat fibroblasts and to complement T in the growth of mouse fibroblasts in soft agar. Therefore, the unique segment of the t gene encodes a portion of the t molecule which is essential to its transformation maintenance function.

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The t-unique coding domain is important to the transformation maintenance function of the simian virus 40 small t antigen.
I Bikel, H Mamon, E L Brown, J Boltax, M Agha, D M Livingston
Molecular and Cellular Biology Apr 1986, 6 (4) 1172-1178; DOI: 10.1128/MCB.6.4.1172

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The t-unique coding domain is important to the transformation maintenance function of the simian virus 40 small t antigen.
I Bikel, H Mamon, E L Brown, J Boltax, M Agha, D M Livingston
Molecular and Cellular Biology Apr 1986, 6 (4) 1172-1178; DOI: 10.1128/MCB.6.4.1172
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