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. 1973 Aug;70(8):2345-9.
doi: 10.1073/pnas.70.8.2345.

Polyadenylation of maternal RNA of sea urchin eggs after fertilization

F H Wilt

Polyadenylation of maternal RNA of sea urchin eggs after fertilization

F H Wilt. 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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