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http://dx.doi.org/10.1021/bi00852a002 | DOI Listing |
Eur J Biochem
February 1995
School of Biological Sciences, University of Sussex, Brighton, England.
Phosphorylation of the initiation factor eIF-2 by the heme-regulated eIF-2 alpha kinase (HCR) results in pronounced inhibition of protein synthesis and of binding of Met-tRNA(f) to 40S subunits in reticulocyte lysates. This inhibition is associated with the appearance of a more rapidly sedimenting 48S complex; this contains mRNA detectable by poly(U) hybridization, but not Met-tRNA(f). In contrast, 48S complexes that accumulate in the presence of the initiation inhibitor edeine contain both Met-tRNA(f) and mRNA.
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