... expression of Caenorhabditis elegans ribonuclease H1 enzymes with different substrate specificities and bivalent cation requirements Hiromi Kochiwa1,2, Mitsuhiro Itaya1,3, Masaru Tomita1,4 and Akio ... duplication within the C. elegans genome. In summary, C. elegans RNase H1 enzymes Table 2. Specific activities of Ce-RNH1a and Ce-RNH1b in the pres-ence of Mg2+or Mn2+ions. One unit of enzymatic ... theprocessing of Okazaki-primer RNA.Results and DiscussionPrimary structures of multiple RNase H1 enzymes in C. elegans Four RNase H1- related genes have been identified inC. elegans, and one of them...