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Oncogene. 2002 Aug 8;21(34):5245-54.

PDCD2 is a negative regulator of HCF-1 (C1).

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Center for Cancer Research, Department of Biology, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts, MA 02139-4307, USA.


Temperature sensitive mutations in host cell factor 1 (HCF-1) arrest cells in the middle of the G1 phase of the cycle. We have shown that the highly conserved C-terminal WYF domain of HCF-1 protein interacts with the MYND domain of the PDCD2 protein. This inter-action is conserved between human HCF-1 and HCF-2 and the C. elegans HCF. Overexpression of PDCD2, which interacts with the N-CoR/mSin3A corepressor complexes, suppresses cotransfected HCF-1 complement-ation of a temperature lesion in the endogenous HCF-1 protein. Overexpression of domains of either PDCD2 or HCF-1, which should interfere with interactions between these two proteins, enhances the complementation.

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