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PMID: 287061 Published · ppublish English Journal Article Research Support, U.S. Gov't, P.H.S.

Distinct single-copy sequence sets in sea urchin nuclear RNAs.

Ernst SG, Britten RJ, Davidson EH

Abstract

The purpose of this study was to determine whether nuclear RNAs (nRNA) of sea urchin embryos and adult tissues contain identical or partially distinct sets of single-copy sequence transcripts. A DNA tracer was prepared consisting mainly of sequences absent from gastrula nRNA; 3.6% of this tracer reacted with adult intestine nRNA but not with gastrula nRNA. The existence of a differentially transcribed DNA fraction was verified by its partial purification and rehybridization to intestine and gastrula nRNAs. About one-third of the genomic single-copy sequence is represented in both nRNAs, or about 2 x 10(8) nucleotides. The differentially transcribed portion of the single-copy genome identified in this work includes about 3.5 x 10(7) nucleotides.

MeSH Terms
Animals Base Sequence Cell Nucleus/physiology DNA/genetics Embryo, Nonmammalian Female Intestines Ovary RNA, Heterogeneous Nuclear/genetics Sea Urchins/genetics
Chemicals
RNA, Heterogeneous Nuclear DNA
Authors & Affiliations
3 authors, click to expand affiliations / ORCID
Ernst S G
Britten R J
Davidson E H
References (20)
20 references, click to expand
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Article Info
Journal
Proceedings of the National Academy of Sciences of the United States of America
Abbr.
Proc Natl Acad Sci U S A
ISSN
0027-8424
Published
1979-05-00
Pages
2209-12
Language
English
Region
United States
NLM ID
7505876
PMCID
PMC383567
Subset
IM
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