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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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mRNA methylation and protein synthesis in extracts from embryos of brine shrimp, Artemia salina.

Cell-free protein-synthesizing extracts prepared from the brine shrimp, Artemia salina, translate methylated mRNAs. Reovirus unmethylated mRNA is inactive as a template when methylation is prevented by the inhibitor, S-adenosylhomocysteine. A salina mRNAs from both undeveloped and developed embryos contain 5'-terminal 7-methylguanosine in an inverted 5'-5' linkage through three phosphate groups to the rest of the polynucleotide chain. Removal of the 7-methylguanosine by beta elimination converts the mRNA from an active form to one inactive in protein synthesis in extracts of A. salina or wheat germ. Extracts of undeveloped and developed embryos methylate reovirus unmethylated mRNA at the 5' ends to form 5'-terminal structures of the type, m7G(5')ppp(5')G and m7G(5')ppp(5')Gm.[1]

References

  1. mRNA methylation and protein synthesis in extracts from embryos of brine shrimp, Artemia salina. Muthukrishnan, S., Filipowicz, W., Sierra, J.M., Both, G.W., Shatkin, A.J., Ochoa, S. J. Biol. Chem. (1975) [Pubmed]
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