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  • Title: Misaminoacylation and transamidation are required for protein biosynthesis in Lactobacillus bulgaricus.
    Author: Schön A, Hottinger H, Söll D.
    Journal: Biochimie; 1988 Mar; 70(3):391-4. PubMed ID: 3139057.
    Abstract:
    Aminoacylation studies with Lactobacillus bulgaricus show that this organism possesses glutamyl-tRNA synthetase activity; however, glutamyl-tRNA synthetase activity cannot be demonstrated. Instead, Glu-tRNAGln, which is formed by glutamyl-tRNA synthetase, is amidated by a specific amidotransferase to Gln-tRNAGln. The amide donor in this reaction is glutamine. Thus, Gln-tRNAGln in this organism is not formed by direct glutaminylation of tRNAGln, but instead by a pathway which involves misaminoacylation and transamidation.
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