Active CHK1 Recombinant. Active CHK1, Source: Baculovirus (Sf9 insect cells), Purity by SDS-PAGE: greater than or equal to 90%, Storage: -80 deg C, Synonyms: chk-1, chk 1, Active CHK1, CHK1, CHK, human CHK1, active kinase, active kinases, recombinant CHK1, 5ug