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  • Title: Corf, the Rev/Rex homologue of HTDV/HERV-K, encodes an arginine-rich nuclear localization signal that exerts a trans-dominant phenotype when mutated.
    Author: Magin C, Hesse J, Löwer J, Löwer R.
    Journal: Virology; 2000 Aug 15; 274(1):11-6. PubMed ID: 10936083.
    Abstract:
    Regulation of nucleo-cytoplasmic export of viral transcripts by a viral protein (Rev/Rex) is a characteristic feature in the replication cycle of complex retroviruses. We recently reported that the endogenous retrovirus family HTDV/HERV-K encodes a protein, Corf, that is a cellular Counterpart of Rev/Rex function and thus a new component of nucleo-cytoplasmic pathways. In HTDV/HERV-K-expressing cells, Corf is localized within the nucleoli. Here we describe the nuclear localization signal (NLS) of the Corf protein. Mutations in the NLS lead to cytoplasmic accumulation of the mutated protein and abrogate Corf function in a trans-dominant way.
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