A hydrophobic protein sequence can override a nuclear localization signal independently of protein context.
1991 ◽
Vol 11
(10)
◽
pp. 5137-5146
◽
Keyword(s):
Simian virus 40 T antigen is specifically targeted to the nucleus by the signal Pro-Lys-Lys-128-Lys-Arg-Lys-Val. We have previously described the isolation of a simian virus 40 T-antigen mutant, 676FS, which retains a wild-type nuclear localization signal but fails to accumulate properly in the nucleus and interferes with the nuclear localization of heterologous proteins. Here we report that the hydrophobic carboxy-terminal sequence novel to 676FS T antigen overrides the nuclear localization signal if fused to other proteins, thereby anchoring the proteins in the cytoplasm. We discuss possible mechanisms by which missorting of such a fusion protein could interfere with the nuclear transport of heterologous proteins.
1991 ◽
Vol 11
(10)
◽
pp. 5137-5146
2001 ◽
Vol 75
(16)
◽
pp. 7321-7329
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2002 ◽
Vol 76
(23)
◽
pp. 11785-11792
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1990 ◽
Vol 111
(6)
◽
pp. 2235-2245
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1998 ◽
Vol 72
(10)
◽
pp. 7722-7732
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2002 ◽
Vol 76
(18)
◽
pp. 9368-9377
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2004 ◽
Vol 78
(2)
◽
pp. 930-937
◽
2002 ◽
Vol 76
(9)
◽
pp. 4621-4624
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Keyword(s):