2.7.7.19 6.4 8 in presence of Mn2+ 642950 2.7.7.19 7 - Mn2+-activated enzyme 642958 2.7.7.19 7.8 8.2 - 642951 2.7.7.19 8 - - 642954, 642962 2.7.7.19 8 - Mg2+-activated enzyme 642957 2.7.7.19 8 - polymerase II (nucleoplasm) 642964 2.7.7.19 8 - polymerase IIa and IIb 642953 2.7.7.19 8 - vaccinia virus enzyme, human, cytoplasmic Mn2+-dependent enzyme 642947 2.7.7.19 8 8.5 - 642963 2.7.7.19 8.2 - - 642937, 642940