[Small cytoplasmic poly(A)+RNA, homologous to the B2 repetitive sequence of the mouse genome, is present in ribonucleoproteins].
Copyright policy )[Small cytoplasmic poly(A)+RNA, homologous to the B2 repetitive sequence of the mouse genome, is present in ribonucleoproteins].
Small cytoplasmic poly(A) + RNA homologous to a highly repeated sequence B2 of the mouse genome (scB2 RNA) was not found as free RNA within a cell. This RNA is bound to small (12-18S) ribonucleoprotein particles as well as to heavy RNP particles, apparently informosomes. After deproteinization of the heavy RNP the major part of scB2 RNA molecules cosedimented with heavy RNAs. It seems that scB2 RNA is associated with mRNA in informosomes via short complementary regions. About half of the scB2 RNA molecules was revealed in the cytoskeleton fraction. The possibility that scB2 RNAs are involved in mRNA transport or in the regulation of mRNA translation is discussed.
Molecular Weight, Mice, Ribonucleoproteins, Centrifugation, Density Gradient, Animals, Nucleic Acid Hybridization, RNA, Poly A, Ribonucleoproteins, Small Nuclear, Repetitive Sequences, Nucleic Acid
Molecular Weight, Mice, Ribonucleoproteins, Centrifugation, Density Gradient, Animals, Nucleic Acid Hybridization, RNA, Poly A, Ribonucleoproteins, Small Nuclear, Repetitive Sequences, Nucleic Acid
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