Protein synthesis in rabbit reticulocytes. Co-eIF-2A reverses mRNA inhibition of ternary complex (Met-tRNAf.eIF-2.GTP) formation by eIF-2.

Reena Roy, P. Ghosh-Dastidar, A. Das, B. Yaghmai, N. K. Gupta

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mRNAs, at low concentrations, drastically inhibit ternary complex formation by eIF-2 (Met-tRNAf.eIF-2.GTP) and, when added to the preformed ternary complex, cause extensive dissociation of the complex. Co-eIF-2A stimulates (2- to 4-fold) Met-tRNAf binding to eIF-2 and, in the presence of excess Co-eIF-2A, the stimulated Met-tRNAf binding to eIF-2 is fully resistant to mRNAs. Other cofactors tested such as Co-eIF-2B and Co-eIF-2C do not reverse mRNA inhibition of ternary complex formation.

Original languageEnglish (US)
Pages (from-to)4719-4722
Number of pages4
JournalJournal of Biological Chemistry
Issue number10
Publication statusPublished - May 25 1981


All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Molecular Biology
  • Cell Biology

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