The mechanism by which heparin stimulates transcription in isolated rat liver nuclei. Polyribonucleotide elongation rates and the number of transcribing RNA polymerase molecules present.

Animals Cations/pharmacology Cell Nucleus/metabolism DNA-Directed RNA Polymerases/metabolism Heparin/pharmacology Liver/metabolism Molecular Weight RNA/metabolism RNA Polymerase I/metabolism RNA Polymerase II/metabolism Rats Transcription, Genetic/drug effects

Cations RNA Heparin RNA Polymerase II DNA-Directed RNA Polymerases RNA Polymerase I