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Published September 1980 | public
Journal Article Metadata-only

Limited Complexity of the RNA in Micromeres of Sixteen-Cell Sea Urchin Embryos

Ernst, Susan G.
Hough-Evans, Barbara R.
Britten, Roy J.
Davidson, Eric H.
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Abstract

The sequence complexity of sea urchin embryo micromere RNA is about 75% of that of total 16-cell embryo cytoplasmic RNA, as reported earlier by Rodgers and Gross [Rodgers, W. H., and Gross, P. R. (1978) Cell, 14, 279–288]. In contrast to the rest of the embryo, there are few, if any, complex maternal RNA species in the micromere cytoplasm which are not represented in the polysomes. The micromeres do not contain detectable quantities of high-complexity nuclear RNA, though such RNA exists in other cells of the fourth-cleavage embryo.

Additional Information

© 1980 Academic Press, Inc. Received April 2, 1980; accepted April 11, 1980. This research was supported by NIH Grant HD-05753. The sea urchin maintenance system was partially equipped with funds supplied by NIH Biomedical Research Support Grant RR-07003, and the culture system is maintained by NIH Grant RR-00986 from the Division of Research Resources. S.G.E. was supported by an NIH postdoctoral fellowship.

Additional details

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Created:
August 19, 2023
Modified:
October 18, 2023