doi: 10.1073/pnas.70.8.2345.
Polyadenylation of maternal RNA of sea urchin eggs after fertilization
- PMID: 4525169
- PMCID: PMC433732
- DOI: 10.1073/pnas.70.8.2345
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Polyadenylation of maternal RNA of sea urchin eggs after fertilization
Proc Natl Acad Sci U S A.
1973 Aug.
Abstract
Between fertilization, or parthenogenetic activation, and the two-cell stage, the content of polyadenylic acid in sea urchin eggs doubles, and the increase occurs primarily in the ribosome-polyribosome fraction. The increase is due to polyadenylation of preexisting RNA molecules synthesized during oogenesis. The polyadenylation occurs in activated, enucleated merogons. It is argued that cytoplasmic polyadenylation may play a role in mobilization of maternal messenger RNA for translation and the polyadenylic acid does not subserve an exclusively nuclear function.
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