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FEBS Lett. 1986 Aug 11;204(1):51-5.

Regions of SV40 large T antigen necessary for oligomerization and complex formation with the cellular oncoprotein p53.


The simian virus 40 (SV40) T antigen is composed of 708 amino acids and forms monomers and various oligomers and, in small amounts, heterologous complexes with the cellular oncoprotein p53 (T-p53). Using SV40 mutants coding for T antigen fragments which are either deleted in the N-terminal half or truncated by various lengths at the C-terminal end, we found that a region between amino acids 114 and 152 and a C-terminal region up to amino acid 669 are essential for the formation of high Mr oligomers of T antigen. Furthermore, only the C-terminal end up to amino acid 669 is essential for T-p53 complex formation but not the N-terminus up to amino acid 152.

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