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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Giles, N. H. Bassett, C. L. Kushner, S. R. Hautala, J. A. |
| Abstract | The expression of a cloned eukaryotic gene [catabolic dehydroquinase (3-dehydroquinate hydro-lyase, EC 4.2.1.10) (qa-2+) from Neurospora crassa] is dramatically increased (as much as 100-fold) in Escherichia coli strains deficient in polynucleotide phosphorylase (pnp) (polynucleotide: orthophosphate nucleotidyltransferase, EC 2.7.7.8) and RNase I (rna). The increased expression is controlled primarily by the absence of polynucleotide phosphorylase and appears to be specific for the eukaryotic gene. No increase in the specific activity of either chromosomal or plasmid-borne prokaryotic genes has been observed. In polynucleotide phosphorylase-deficient strains of E. coli the half-life of plasmid (pVK88, ampr qa-2+)-encoded mRNAs increases from 1.0 to 2.8 min. This increase must be due primarily to stabilization of the aq-2 mRNA because no increase in the half-lives of pBR322 vehicle mRNAs was observed in polynucleotide phosphorylase-deficient strains. These results suggest that there are inherent structural differences between prokaryotic and eukaryotic mRNAs. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 11 |
| Volume Number | 76 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1979-01-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | DNA, Recombinant Escherichia Coli Genetics Hydro-Lyases RNA, Messenger Metabolism Enzymology Genes Neurospora Crassa Plasmids Polyribonucleotide Nucleotidyltransferase Quinic Acid Analogs & Derivatives Ribonucleases Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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