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Size of the poly(A) region in mouse globin messenger RNA

✍ Scribed by Marcelle R. Morrison; Christian G. Merkel; Jerry B. Lingrel

Publisher: Springer
Year: 1973
Tongue: English
Weight: 350 KB
Volume: 1
Category: Article
ISSN: 0301-4851
DOI: 10.1007/bf00357406

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✦ Synopsis

A 9S RNA fraction from mouse reticulocytes, containing the active α- and β-globin mRNAs, has been isolated by hybridization of the polyadenylate regions in the mRNAs to oligo(dT)-cellulose. The adenylate-rich sequence isolated by limited RNase digestion of the globin mRNAs migrates between 4S and 5S RNA standards when co-electrophoresed on 12% polyacrylamide gels. Poly(A) standards, 28 and 84 nucleotides in length, showed anomolous migration relative to the 4S and 5S RNAs. The average size of the adenylate-rich sequence, estimated by its migration relative to the poly(A) standards, is about 50 nucleotides. The polyadenylate stretch in mouse globin mRNA is therefore much shorter than those found in other mRNAs.

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