Table 3. Relative binding affinities from competition EMSA experiments for PARP1-FL and truncation mutants to 19-mer ssDNA compared to 19-mer ssRNA.

Protein type	KDNA/KRNA	KRNA/KDNA
PARP1-FL	25.3±3.0	0.001±0.02
PARP1-∆WGR	26.5±2.4	0.024±0.011
PARP1-∆CAT	15.7±3.9	0.046±0.021
PARP1-∆BRCT	42.3±1.2	0.001±0.016
PARP1-∆Zn1∆Zn2	0.015 3±0.021	7.2±0.7
PARP1-∆Zn3	23.1±5.2	0.032±0.017