Translation initiation factor (iso) 4E interacts with BTF3, the β subunit of the nascent polypeptide-associated complex
Copyright policy )Translation initiation factor (iso) 4E interacts with BTF3, the β subunit of the nascent polypeptide-associated complex
A two-hybrid screen with the translation initiation factor, eIF(iso)4E from Arabidopsis, identified a clone encoding a lipoxygenase type 2 [Freire, M.A., et al., 2000. Plant lipoxygenase 2 is a translation initiation factor-4E-binding protein. Plant Molecular Biology 44, 129-140], and three cDNA clones encoding the homologue of the mammalian BTF3 factor, the beta subunit of the nascent polypeptide-associated complex (NAC). Here we report on the interaction between the translation initiation factor eIF(iso)4E and AtBTF3. AtBTF3 protein is able to interact with the wheat initiation factors eIF4E and eIF(iso)4E. AtBTF3 contains a sequence related to the prototypic motif found on most of the 4E-binding proteins, and competes with the translation initiation factor eIF(iso)4G for eIF4(iso)4E binding, in a two hybrid interference assay. These findings provide a molecular link between the translation initiation mechanism and the emergence of the nascent polypeptide chains.
Eukaryotic Initiation Factor-4F, Sequence Homology, Amino Acid, Two-Hybrid System Techniques, Molecular Sequence Data, Arabidopsis, Nuclear Proteins, Amino Acid Sequence, Transcription Factors
Eukaryotic Initiation Factor-4F, Sequence Homology, Amino Acid, Two-Hybrid System Techniques, Molecular Sequence Data, Arabidopsis, Nuclear Proteins, Amino Acid Sequence, Transcription Factors
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