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  • Title: Two genes encode related cytoplasmic elongation factors 1 alpha (EF-1 alpha) in Drosophila melanogaster with continuous and stage specific expression.
    Author: Hovemann B, Richter S, Walldorf U, Cziepluch C.
    Journal: Nucleic Acids Res; 1988 Apr 25; 16(8):3175-94. PubMed ID: 3131735.
    Abstract:
    We have characterized two previously cloned genes, F1 and F2 (1) that code for elongation factor EF - 1 alpha of Drosophila melanogaster. Genomic Southern blot hybridization revealed that they are the only gene copies present. We isolated cDNA clones of both transcripts from embryonal and pupal stage of development that cover the entire transcription unit. The 5' ends of both genes have been determined by primer extension and for F1 also by RNA sequencing. These start sites have been shown to be used consistently during development. Comparison of cDNA and genomic sequences revealed that EF - 1 alpha,F1 consists of two and EF - 1 alpha,F2 of five exons. The two described elongation factor genes exhibit several regions of strong sequence conservation when compared to five recently cloned eucaryotic elongation factors.
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