title: Cleavage of mouse ribosomal RNAs by the endonuclease associated with Newcastle disease virus.
abstract: Mouse ribosomal ribonucleic acids (rRNAs) are specifically cleaved to polynucleotides of lower molecular mass by the endonuclease associated with Newcastle disease virus (NDV). The 28 S RNA yielded a fragment of about Mr = 1.7 X 10(5) which is resistant to the endonuclease. We assume that one molecule of 28 S RNA contains one such resistant region. 18 S RNA does not possess resistant regions of this character and it is cleaved by the endonuclease to smaller molecules.
mesh_terms: D000818:Animals; D002286:Carcinoma, Ehrlich Tumor; D004722:Endoribonucleases / Q000378:metabolism*; D051379:Mice; D008970:Molecular Weight; D009522:Newcastle disease virus / Q000201:enzymology*; D012335:RNA, Ribosomal / Q000378:metabolism*
chemical_list: D012335:RNA, Ribosomal; D004722:Endoribonucleases