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. 1983;190(2):336-43.
doi: 10.1007/BF00330661.

Polyamines enhance readthrough of the UGA termination codon in a mammalian messenger RNA

M M Hryniewicz, R A Vonder Haar

Polyamines enhance readthrough of the UGA termination codon in a mammalian messenger RNA

M M Hryniewicz et al. Mol Gen Genet. 1983.

Abstract

The polyamines spermidine and spermine stimulate the readthrough of the UGA termination codon of rabbit beta-globin mRNA when it is translated in a rabbit reticulocyte cell-free system. The other major polyamine, putrescine, does not show this effect. The polyamine induced readthrough is specific for UGA as the UAA termination codon of alpha-globin mRNA is not read through and general translational misreading errors are not occurring in the presence of spermidine or spermine. The probable mechanism of this effect and some possible regulatory implications are discussed.

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