Multivalent feedback regulation of HMG CoA reductase, a control mechanism coordinating isoprenoid synthesis and cell growth.
The availability of compactin (ML-236B), a potent competitive inhibitor of 3-hydroxy-3-methylglutaryl Coenzyme A reductase, has permitted the demonstration of a hitherto unsuspected aspect of mevalonate metabolism and isoprenoid synthesis in cultured mammalian cells. 3-Hydroxy-3-methylglutaryl Coenz...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
1980-07-01
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| Series: | Journal of Lipid Research |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0022227520422217 |
| _version_ | 1818459732362395648 |
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| author | M S Brown J L Goldstein |
| author_facet | M S Brown J L Goldstein |
| author_sort | M S Brown |
| collection | DOAJ |
| description | The availability of compactin (ML-236B), a potent competitive inhibitor of 3-hydroxy-3-methylglutaryl Coenzyme A reductase, has permitted the demonstration of a hitherto unsuspected aspect of mevalonate metabolism and isoprenoid synthesis in cultured mammalian cells. 3-Hydroxy-3-methylglutaryl Coenzyme A reductase, the enzyme that synthesizes mevalonate, appears to be regulated through a multivalent feedback mechanism. Full suppression of the reductase requires the presence of at least two regulators: 1) cholesterol, which is normally derived exogenously from plasma low density lipoprotein (LDL), and 2) a nonsterol product, which is normally synthesized endogenously from mevalonate. Evidence indicates that both of these regulators of the reductase may be essential for the growth of mammalian cells in culture. The multivalent feedback regulation of 3-hydroxy-3-methylglutaryl Coenzyme A reductase, together with secondary regulatory changes in other enzymes of the sterol synthetic pathway, coordinates the branched pathway of mevalonate metabolism so as to assure a constant supply of cholesterol and nonsterol products. These new findings have important implications for the understanding of isoprenoid metabolism and its relation to cell growth. |
| first_indexed | 2024-12-14T23:19:02Z |
| format | Article |
| id | doaj.art-05225d1a85c044c584437c2b5421d47c |
| institution | Directory Open Access Journal |
| issn | 0022-2275 |
| language | English |
| last_indexed | 2024-12-14T23:19:02Z |
| publishDate | 1980-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Lipid Research |
| spelling | doaj.art-05225d1a85c044c584437c2b5421d47c2022-12-21T22:44:01ZengElsevierJournal of Lipid Research0022-22751980-07-01215505517Multivalent feedback regulation of HMG CoA reductase, a control mechanism coordinating isoprenoid synthesis and cell growth.M S BrownJ L GoldsteinThe availability of compactin (ML-236B), a potent competitive inhibitor of 3-hydroxy-3-methylglutaryl Coenzyme A reductase, has permitted the demonstration of a hitherto unsuspected aspect of mevalonate metabolism and isoprenoid synthesis in cultured mammalian cells. 3-Hydroxy-3-methylglutaryl Coenzyme A reductase, the enzyme that synthesizes mevalonate, appears to be regulated through a multivalent feedback mechanism. Full suppression of the reductase requires the presence of at least two regulators: 1) cholesterol, which is normally derived exogenously from plasma low density lipoprotein (LDL), and 2) a nonsterol product, which is normally synthesized endogenously from mevalonate. Evidence indicates that both of these regulators of the reductase may be essential for the growth of mammalian cells in culture. The multivalent feedback regulation of 3-hydroxy-3-methylglutaryl Coenzyme A reductase, together with secondary regulatory changes in other enzymes of the sterol synthetic pathway, coordinates the branched pathway of mevalonate metabolism so as to assure a constant supply of cholesterol and nonsterol products. These new findings have important implications for the understanding of isoprenoid metabolism and its relation to cell growth.http://www.sciencedirect.com/science/article/pii/S0022227520422217 |
| spellingShingle | M S Brown J L Goldstein Multivalent feedback regulation of HMG CoA reductase, a control mechanism coordinating isoprenoid synthesis and cell growth. Journal of Lipid Research |
| title | Multivalent feedback regulation of HMG CoA reductase, a control mechanism coordinating isoprenoid synthesis and cell growth. |
| title_full | Multivalent feedback regulation of HMG CoA reductase, a control mechanism coordinating isoprenoid synthesis and cell growth. |
| title_fullStr | Multivalent feedback regulation of HMG CoA reductase, a control mechanism coordinating isoprenoid synthesis and cell growth. |
| title_full_unstemmed | Multivalent feedback regulation of HMG CoA reductase, a control mechanism coordinating isoprenoid synthesis and cell growth. |
| title_short | Multivalent feedback regulation of HMG CoA reductase, a control mechanism coordinating isoprenoid synthesis and cell growth. |
| title_sort | multivalent feedback regulation of hmg coa reductase a control mechanism coordinating isoprenoid synthesis and cell growth |
| url | http://www.sciencedirect.com/science/article/pii/S0022227520422217 |
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