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PubMed · 6604056

Involvement of eukaryotic initiation factor 4A in the cap recognition process.

I Edery·M Hümbelin·A Darveau·K A Lee·S Milburn·J W Hershey·H Trachsel·N Sonenberg
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Abstract

Antibodies against eukaryotic initiation factor 4A (eIF-4A) were used to study the involvement of this factor in recognizing the 5' cap structure of eukaryotic mRNA. We demonstrate that an approximately 50-kilodalton polypeptide present in rabbit reticulocyte ribosomal high salt wash which can be specifically cross-linked to the 5' oxidized cap structure of reovirus mRNA (Sonenberg, N. (1981) Nucleic Acids Res. 9, 1643) reacts with an anti-eIF-4A monoclonal antibody. We also show that antibodies against eIF-4A react with a 50-kilodalton polypeptide present in a cap-binding protein complex obtained by elution from a m7GTP-agarose affinity column. Comparative peptide analysis of eIF-4A and the 50-kilodalton component of the cap-binding protein complex indicates a very strong similarity between the two polypeptides.

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Adenosine TriphosphateAnimalsCarrier ProteinsChromatography, AffinityEukaryotic Initiation Factor-4AMolecular WeightPeptide FragmentsPeptide Initiation FactorsRNA Cap-Binding ProteinsRNA CapsRabbitsTrypsinJournal ArticleResearch Support, Non-U.S. Gov'tResearch Support, U.S. Gov't, P.H.S.

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I Edery, M Hümbelin, A Darveau, K A Lee, S Milburn, J W Hershey, H Trachsel, N Sonenberg. 1983-09-25. Involvement of eukaryotic initiation factor 4A in the cap recognition process.. https://pubmed.ncbi.nlm.nih.gov/6604056/

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