... H1-related genes, and one of them has an isoform produced by alter-native splicing. However, little is known about the enzymatic features of the proteins encoded by these genes. To determine the differences ... completely the same,but the other proteins exhibited different patterns(Fig. 5A). On the other hand, when the RNase H assaywas performed using fluorescein isothiocyanate labelingat the 3¢ end of the ... intoan RNase H1 protein that lacks a dsRHbd at the N-ter-minus. We analyzed the expression patterns of the five transcripts, including the pair of alternative splicingvariants, throughout the...