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PMID: 3422101 Published · ppublish English Journal Article Research Support, U.S. Gov't, P.H.S.

Location and characterization of two widely separated glucocorticoid response elements in the phosphoenolpyruvate carboxykinase gene.

Molecular and cellular biology ·Vol. 8 ·No. 1 ·1988-01-00 ·Pages 96-104

Petersen DD, Magnuson MA, Granner DK

Abstract

Chimeric genes were constructed by fusion of various regions of the 5'-flanking sequence from the phosphoenolpyruvate carboxykinase (GTP) (PEPCK) gene to the chloramphenicol acetyltransferase-coding sequence and to simian virus 40 splice and polyadenylation sequences. These were used to demonstrate that two glucocorticoid regulatory elements (GREs) combine to confer glucocorticoid responsiveness upon the PEPCK gene in H4IIE hepatoma cells. Both elements, a distal one whose 5' boundary is located between -1264 and -1111 base pairs and a proximal one located between -468 and -420 base pairs relative to the transcription initiation site, act independently, in various positions and orientations, and upon the heterologous thymidine kinase promoter. Each element accounts for half of the maximal response of the chimeric genes. Therefore, two widely separated enhancerlike elements contribute equally to the response of the PEPCK gene to glucocorticoid hormones. Neither of the PEPCK GREs contains the TGTTCT consensus sequence associated with most other GREs.

MeSH Terms
Acetyltransferases/genetics Animals Chloramphenicol O-Acetyltransferase Chromosome Mapping DNA Mutational Analysis Gene Expression Regulation Glucocorticoids/physiology Phosphoenolpyruvate Carboxykinase (GTP)/genetics Promoter Regions, Genetic Rats Recombinant Fusion Proteins/biosynthesis Regulatory Sequences, Nucleic Acid Transcription, Genetic
Chemicals
Glucocorticoids Recombinant Fusion Proteins Acetyltransferases Chloramphenicol O-Acetyltransferase Phosphoenolpyruvate Carboxykinase (GTP)
Authors & Affiliations
3 authors, click to expand affiliations / ORCID
Petersen D D
Department of Molecular Physiology and Biophysics, Vanderbilt University Medical School, Nashville, Tennessee 37232.
Magnuson M A
Granner D K
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Article Info
Journal
Molecular and cellular biology
Abbr.
Mol Cell Biol
ISSN
0270-7306
Published
1988-01-00
Pages
96-104
Language
English
Region
United States
NLM ID
8109087
PMCID
PMC363086
Subset
IM
Grants
NIADDK NIH HHS · 5T32AM07061-13 · United States
NIDDK NIH HHS · DK07061 · United States
NIDDK NIH HHS · DK35107 · United States
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