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| Content Provider | PubMed Central |
|---|---|
| Author | Terasaki, M. Rubin, H. |
| Abstract | When extracellular magnesium is reduced by a factor of 50 (from 1.0 to 0.02 mM), the total intracellular magnesium of a spontaneously transformed clone of 3T3 cells decreases by 30-50%. Protein synthesis rates in these cells were measured as the intracellular magnesium decreased. Protein synthesis rates and magnesium content were found to decrease in parallel with each other. At 3 hr, a decrease to 84% of control values of magnesium content was accompanied by a decrease to 85% of control values of leucine incorporation rates. A larger inhibition had occurred by 12 hr, when the magnesium had decreased to 67% and leucine incorporation rates had decreased to 57%. When magnesium was restored to magnesium-deprived cells, both magnesium content and leucine incorporation increased about 2-fold by 1 hr. In the experiments reported here, initial small changes in magnesium content are associated with changes in protein synthesis rates. This strongly suggests that magnesium is present at a regulatory rather than excess concentration for protein synthesis. The results are consistent with a role for intracellular magnesium in the regulation of protein synthesis and support the hypothesis that magnesium has a central role in the regulation of metabolism and growth. |
| Starting Page | 7324 |
| File Format | |
| ISSN | 10916490 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 21 |
| Volume Number | 82 |
| Language | English |
| Publisher Date | 1985-11-01 |
| Access Restriction | Open |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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