| Literature DB >> 333453 |
M Springer, M Graffe, H Hennecke.
Abstract
A previously isolated thermosensitive mutant [Springer, M., Graffe, M. & Grunberg-Manago, M. (6977) Mol. Gen. Genet. 151, 17-26] exhibits two defects in vitro, one in the initiation factor IF3 and the other in the L-phenylalanine: tRNA-Phe ligase (EC 6.1.1.20). Specialized lambda transducing phages that transduced this mutant to thermoresistance were selected. In vitro studies showed that the transductants had a normal IF3 activity. One of these transducing phages was shown to code for a protein synthesized under the control of Escherichia coli promoters, which has the same molecular weight as IF3. This protein crossreacts specifically with IF3 antisera and comigrates with pure IF3 in a two-dimensional gel system.Entities:
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Year: 1977 PMID: 333453 PMCID: PMC431805 DOI: 10.1073/pnas.74.9.3970
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN: 0027-8424 Impact factor: 11.205