Polyadenylate Sequences and Biologic Activity of Human Globin Messenger Ribonucleic Acid

Cann, Almira; Gambino, Roberto; Banks, J.; Bank, Arthur

doi:10.1016/s0021-9258(19)81271-1

Cited by 39 publications

References 28 publications

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Polyadenylate‐deficient analogues of poly(A)‐containing mRNA sequences in cultured AKR mouse embryo cells

Siegal

Hodgson

Elder

et al. 1980

Journal Cellular Physiology

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Five to six percent (by mass) of AKR-2B mouse embryo cell polysomal RNA consists of messenger RNA sequences which may exist in polyadenylated form. In the steady state, however, only 30--40% of these molecules are retained by extensive passage over oligo(dT)-cellulose, the remainder being present in the form of poly(A)-deficient analogues. Within experimental limits, these poly(A)-deficient analogues contain representatives of all poly(A)-containing mRNA sequences in these cells. An analysis of the kinetics of hybridization of cDNA probes enriched for either abundant or rare poly(A)-containing mRNA sequences suggests that the frequency distributions of poly(A)-containing and poly(A)-deficient analogues are dissimilar, and that a relationship exists between the intracellular frequency of a given mRNA sequence and the number of poly(A)-deficient analogues of that sequence. High frequency sequences appear to be enriched in the poly(A)-containing fraction, while low frequency sequences are predominately associated with the poly(A)-deficient fraction, thus, poly(A) may play a role in the regulation of mRNA frequency in the cytoplasm.

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