title: Association of 4S ribonucleic acid with oncornavirus ribonucleic acids.
abstract: Oncornavirus 60 to 70S ribonucleic acids (RNA), such as those from avian myeloblastosis virus, Schmidt-Ruppin virus, or mouse sarcoma-mouse leukemia viruses, isolated by conventional techniques, contain 4S transferlike RNA molecules that are released upon dissociation of the 60 to 70S RNA with heat. The 4S RNA represents 2.5 to 3.0% of the RNA in the 65S aggregate or 4 to 5 molecules per molecule of 35S RNA formed.
mesh_terms: D001345:Autoradiography; D001354:Avian Leukosis Virus / Q000032:analysis* / Q000302:isolation & purification; D001358:Avian Sarcoma Viruses / Q000032:analysis* / Q000302:isolation & purification; D002499:Centrifugation, Density Gradient; D011232:Chemical Precipitation; D004589:Electrophoresis, Disc; D017988:Gammaretrovirus / Q000032:analysis* / Q000302:isolation & purification; D006018:Glycols; D006358:Hot Temperature; D008970:Molecular Weight; D009691:Nucleic Acid Denaturation; D010759:Phosphorus Isotopes; D012367:RNA, Viral / Q000032:analysis* / Q000302:isolation & purification; D012260:Ribonucleases; D013395:Sucrose; D014316:Tritium; D014776:Virus Cultivation
chemical_list: D006018:Glycols; D010759:Phosphorus Isotopes; D012367:RNA, Viral; D014316:Tritium; D013395:Sucrose; D012260:Ribonucleases