title: Characterisation of an endogenous protein kinase activity in ribonucleoprotein structures containing heterogenous nuclear RNA in HeLa cell nuclei.
mesh_terms: D000596:Amino Acids / Q000032:analysis; D002412:Cations; D002467:Cell Nucleus / Q000201:enzymology*; D002499:Centrifugation, Density Gradient; D006367:HeLa Cells / Q000201:enzymology*; D007700:Kinetics; D008970:Molecular Weight; D009698:Nucleoproteins / Q000378:metabolism*; D011494:Protein Kinases / Q000302:isolation & purification / Q000378:metabolism*; D012334:RNA, Neoplasm / Q000302:isolation & purification; D012261:Ribonucleoproteins / Q000302:isolation & purification / Q000378:metabolism*
chemical_list: D000596:Amino Acids; D002412:Cations; D009698:Nucleoproteins; D012334:RNA, Neoplasm; D012261:Ribonucleoproteins; D011494:Protein Kinases