doi: 10.1126/science.2166335.
Identification of a sequence in the PEPCK gene that mediates a negative effect of insulin on transcription
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- PMID: 2166335
- DOI: 10.1126/science.2166335
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Identification of a sequence in the PEPCK gene that mediates a negative effect of insulin on transcription
Science.
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Abstract
Phosphoenolpyruvate carboxykinase (PEPCK) governs the rate-limiting step in gluconeogenesis. Glucocorticoids and adenosine 3',5'-monophosphate (cAMP) increase PEPCK gene transcription and gluconeogenesis, whereas insulin has the opposite effect. Insulin is dominant, since it prevents cAMP and glucocorticoid-stimulated transcription. Glucocorticoid and cAMP response elements have been located in the PEPCK gene and now a 15-base pair insulin-responsive sequence (IRS) is described. Evidence for a binding activity that recognizes this sequence is presented.
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