title: The phosphorylation of the proteins of rat liver heterogeneous ribonucleoprotein particles by an endogenous kinase activity.
abstract: An endogenous protein kinase activity of liver heterogeneous nuclear ribonucleoprotein particles has been characterized and the particle proteins which it phosphorylates in vitro have been fractionated on two-dimensional polyacrylamide gels. The activity is dependent on Mg2+ and is further stimulated by cyclic AMP, polyamines and Mn2+.
mesh_terms: D000818:Animals; D000242:Cyclic AMP / Q000378:metabolism; D008099:Liver / Q000378:metabolism*; D008274:Magnesium / Q000378:metabolism; D008297:Male; D008345:Manganese / Q000378:metabolism; D010766:Phosphorylation; D011073:Polyamines / Q000378:metabolism; D011494:Protein Kinases / Q000378:metabolism*; D012332:RNA, Heterogeneous Nuclear / Q000378:metabolism*; D051381:Rats
chemical_list: D011073:Polyamines; D012332:RNA, Heterogeneous Nuclear; D008345:Manganese; D000242:Cyclic AMP; D011494:Protein Kinases; D008274:Magnesium