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Large Heterogeneous Nuclear Ribonucleic Acid Has Three Times As Many 5' Caps As Polyadenylic Acid Segments, and Most Caps Do Not Enter Polyribosomes

Overview
Journal Mol Cell Biol
Specialty Cell Biology
Date 1981 Feb 1
PMID 6152852
Citations 25
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Abstract

The rate of synthesis in Chinese hamster cells of 5' cap structures, m7 GpppNmp, in large (greater than 700 bases) heterogeneous nuclear ribonucleic acid (RNA) molecules is two to three times faster than the synthesis of 3'-terminal polyadenylic acid segments. As judged by presence of caps, newly synthesized polysomal messenger RNA, exclusive of messenger RNA the size of histone messenger RNA, is more than 90% in the polyadenylated category. It appears, therefore, that between half and two-thirds of the long capped heterogeneous nuclear RNA molecules do not contribute a capped polysomal derivative to the cytoplasm. There are capped, nonpolysomal, non-polyadenylated molecules with a rapid turnover rate that fractionate with the cytoplasm. These metabolically unstable molecules either could represent leakage into the cytoplasm during fractionation or could truly spend a brief time in the cytoplasm before decay.

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References
1.
Soeiro R, Vaughan M, Warner J, Darnell Jr J . The turnover of nuclear DNA-like RNA in HeLa cells. J Cell Biol. 1968; 39(1):112-8. PMC: 2107516. DOI: 10.1083/jcb.39.1.112. View

2.
Berget S, Moore C, Sharp P . Spliced segments at the 5' terminus of adenovirus 2 late mRNA. Proc Natl Acad Sci U S A. 1977; 74(8):3171-5. PMC: 431482. DOI: 10.1073/pnas.74.8.3171. View

3.
PENE J, KNIGHT Jr E, Darnell Jr J . Characterization of a new low molecular weight RNA in HeLa cell ribosomes. J Mol Biol. 1968; 33(3):609-23. DOI: 10.1016/0022-2836(68)90309-4. View

4.
Jeanteur P, Amaldi F, Attardi G . Partial sequence analysis of ribosomal RNA from HeLa cells. II. Evidence for sequences of non-ribosmal type in 45 and 32 s ribosomal RNA precursors. J Mol Biol. 1968; 33(3):757-75. DOI: 10.1016/0022-2836(68)90318-5. View

5.
Weinberg R, Penman S . Small molecular weight monodisperse nuclear RNA. J Mol Biol. 1968; 38(3):289-304. DOI: 10.1016/0022-2836(68)90387-2. View