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. 1985 Nov 25;13(22):8053-63.
doi: 10.1093/nar/13.22.8053.

Selection of sequence elements that substitute for the standard AATAAA motif which signals 3' processing and polyadenylation of late simian virus 40 mRNAs

C Swimmer, T Shenk
Free PMC article

Selection of sequence elements that substitute for the standard AATAAA motif which signals 3' processing and polyadenylation of late simian virus 40 mRNAs

C Swimmer et al. Nucleic Acids Res. .
Free PMC article

Abstract

A method is described which allows selection of sequences which can substitute for the normal AATAAA hexanucleotide involved in polyadenylation of SV40 late mRNAs. Plaques were generated from viral DNA lacking the motif, forcing acquisition of substitute sequences. Four variants were characterized. All displayed wild-type growth kinetics and produced normal levels of late mRNAs and proteins. Two variants had reacquired AATAAA elements and one acquired an ATTAAA sequence. The last variant carried an ATTTTTTAAA segment, suggesting this novel sequence, or some portion of it, can also signal poly A addition.

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References

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