Figure 2.
Distribution of ɛC and uracil-DNA glycosylase activities after FPLC chromatography on Mono S FPLC HR 5/5 column. The proteins containing the ɛCDG activity (fraction IV) were loaded on a Mono S FPLC HR 5/5 column and eluted by a linear NaCl gradient. (A) 250 fmol of the ɛC-34/G (■) duplex oligonucleotides were incubated with 1 μl from each column fraction for 10 min in a 50-μl reaction mixture. (B) 250 fmol of the U-34/G (▴) duplex oligonucleotides were incubated with 1 μl from each column fraction for 30 min in a 50-μl reaction mixture. The products of the reaction was analyzed as described in Fig. 1 and quantified by using the PhosphorImager (model Storm 840). For details see Materials and Methods.