Isolation of a cDNA clone for human threonyl-tRNA synthetase: amplification of the structural gene in borrelidin-resistant cell lines. |
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| Authors: | K J Kontis and S M Arfin |
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| Affiliation: | Department of Biological Chemistry, College of Medicine, University of California, Irvine 92717. |
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| Abstract: | A cDNA for threonyl-tRNA synthetase was isolated from a human placental cDNA lambda gt11 expression library by immunological screening, and its identity was confirmed by hybrid-selected mRNA translation. With this cDNA used as a hybridization probe, borrelidin-resistant Chinese hamster ovary cells that overproduced threonyl-tRNA synthetase were shown to have increased levels of threonyl-tRNA synthetase mRNA and gene sequences. Amplification of the gene did not appear to have been accompanied by any major structural reorganizations. |
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