title: Assays for CDK activity and DNA replication in the cell cycle.
abstract: This unit describes two assays for different stages of the cell cycle in tissue culture cells. One is a biochemical measurement that assays the protein kinase activity of different cyclin-dependent kinase complexes that are present in late G1 phase, S phase, G2 phase, or mitosis. The other assay uses immunofluorescence to detect DNA replication by the incorporation of nucleotide analogs into DNA. These assays are useful in analyzing the stage and degree of synchrony of the cell cycle and changes in the basic cell cycle machinery.
authors.affiliation: Wellcome/CRC Institute, and Cambridge University, Cambridge, United Kingdom.
authors.forename: J
authors.initials: J
authors.lastname: Pines
authors.forename: M
authors.initials: M
authors.lastname: Jackman
authors.forename: K
authors.initials: K
authors.lastname: Simpson
mesh_terms: D000818:Animals; D001973:Bromodeoxyuridine / Q000032:analysis; D002453:Cell Cycle / Q000502:physiology*; D002478:Cells, Cultured / Q000166:cytology / Q000201:enzymology; D018844:Cyclin-Dependent Kinases / Q000032:analysis* / Q000502:physiology; D016213:Cyclins / Q000502:physiology; D004261:DNA Replication; D047468:Immunoprecipitation; D007202:Indicators and Reagents; D008322:Mammals / Q000033:anatomy & histology; D010761:Phosphorus Radioisotopes / Q000032:analysis
chemical_list: D016213:Cyclins; D007202:Indicators and Reagents; D010761:Phosphorus Radioisotopes; D018844:Cyclin-Dependent Kinases; D001973:Bromodeoxyuridine