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. 1977 Oct;74(10):4356–4359. doi: 10.1073/pnas.74.10.4356

Translational control by protein kinase in Artemia salina and wheat germ.

J M Sierra, C de Haro, A Datta, S Ochoa
PMCID: PMC431940  PMID: 270677

Abstract

The catalytic subunit of cyclic 3':5'-AMP-dependent protein kinase (ATP:protein phosphotransferase, EC 2.7.1.37) inhibits translation in Artemia salina and wheat germ extracts. It acts, as in reticulocyte lysates [Datta, A., de Haro, C., Sierra, J. M. & Ochoa, S. (1977) Proc. Natl. Acad. Sci. USA 74, 1463-1467] by catalyzing the conversion of a proinhibitor to an inhibitor of polypeptide chain initiation. Addition of ATP and either cyclic AMP or catalytic subunit promotes the proinhibitor-inhibitor conversion in crude proinhibitor preparations from A. salina embryos. The effect of cyclic AMP is due to stimulation of cyclic AMP-dependent protein kinase, present in such preparations, and is inhibited by hemin. In similar preparations from wheat germ, addition of ATP and catalytic subunit promoted proinhibitor-inhibitor conversion, but addition of ATP and cyclic AMP has little or no effect. As assayed with histone as substrate, wheat germ preparations exhibit a protein kinase activity that is not stimulated by the addition of cyclic AMP or cyclic GMP. Our results suggest that a translational control system, similar to that existing in rabbit reticulocytes and other mammalian cells, is present in organisms evolutionarily far removed from mammals.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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