Inhibition of apoptosis of a PARP(-)/(-)cell line transfected with PARP DNA-binding domain mutants.

Abstract excerpt

We have investigated the possibility of the involvement of PARP in apoptosis, independently of its enzymatic activity. We thus transfected PARP(-)/(-)A11 cells with a DNA construct encoding the PARP DNA-binding domain (DBD) fragment or mutants DBDbd(-), defective in DNA binding to DNA strand breaks, and DBDcl(-), resistant to caspase-3 cleavage. We found that in the absence of PARP, while expression of DBD has...

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