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Crystal structures reveal a new and novel FoxO1 binding site within the human glucose-6-phosphatase catalytic subunit 1 gene promoter

Journal Article · · Journal of Structural Biology
 [1];  [2];  [3];  [4];  [1]
  1. Univ. of Minnesota, Austin, MN (United States)
  2. Univ. of Minnesota, Austin, MN (United States); Korea Basic Science Inst., Daejeon (Republic of Korea)
  3. Univ. of Minnesota, Austin, MN (United States); SuperNova C LLC, Missoula, MT (United States)
  4. Vanderbilt Univ. School of Medicine, Nashville, TN (United States)
Human glucose-6-phosphatase plays a vital role in blood glucose homeostasis and holds promise as a therapeutic target for diabetes. Expression of its catalytic subunit gene 1 (G6PC1) is tightly regulated by metabolic-response transcription factors such as FoxO1 and CREB. Although at least three potential FoxO1 binding sites (insulin response elements, IREs) and one CREB binding site (cAMP response element, CRE) within the proximal region of the G6PC1 promoter have been identified, the interplay between FoxO1 and CREB and between FoxO1 bound at multiple IREs has not been well characterized. Here we present the crystal structures of the FoxO1 DNA binding domain in complex with the G6PC1 promoter. Here, these complexes reveal the presence of a new non-consensus FoxO1 binding site that overlaps the CRE, suggesting a mutual exclusion mechanism for FoxO1 and CREB binding at the G6PC1 promoter. Additional findings include (i) non-canonical FoxO1 recognition sites, (ii) incomplete FoxO1 occupancies at the available IRE sites, and (iii) FoxO1 dimeric interactions that may play a role in stabilizing DNA looping. These findings provide insight into the regulation of G6PC1 gene transcription by FoxO1, and demonstrate a high versatility of target gene recognition by FoxO1 that correlates with its diverse roles in biology.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
American Diabetes Assoc.; Commonwealth of Kentucky Diabetes Research Trust Fund; National Inst. of Health
OSTI ID:
1357623
Journal Information:
Journal of Structural Biology, Journal Name: Journal of Structural Biology Journal Issue: 1 Vol. 198; ISSN 1047-8477
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
ENGLISH

References (58)

FoxO1: A molecule for all seasons journal May 2011
The grammar of transcriptional regulation journal January 2014
The role of FOXO in the regulation of metabolism journal May 2009
Transcriptional regulators of hepatic gluconeogenesis journal January 2013
The SLC37 Family of Sugar-Phosphate/Phosphate Exchangers book January 2014
[20] Processing of X-ray diffraction data collected in oscillation mode book January 1997
Enhanceosomes journal April 2001
Hepatic glucose metabolism in humans—its role in health and disease journal September 2003
Multiple modes of chromatin remodeling by Forkhead box proteins journal July 2012
Structural basis for DNA recognition by FOXO proteins journal November 2011
Role of resveratrol in FOXO1-mediated gluconeogenic gene expression in the liver journal December 2010
Class IIa Histone Deacetylases Are Hormone-Activated Regulators of FOXO and Mammalian Glucose Homeostasis journal May 2011
Impaired Regulation of Hepatic Glucose Production in Mice Lacking the Forkhead Transcription Factor Foxo1 in Liver journal September 2007
OutFOXOing disease and disability: the therapeutic potential of targeting FoxO proteins journal May 2008
The enhanceosome journal April 2008
Structural Basis for DNA Recognition by FoxO1 and Its Regulation by Posttranslational Modification journal September 2008
CREB regulates hepatic gluconeogenesis through the coactivator PGC-1 journal September 2001
A fasting inducible switch modulates gluconeogenesis via activator/coactivator exchange journal October 2008
The long-range interaction landscape of gene promoters journal September 2012
Integrated control of hepatic lipogenesis versus glucose production requires FoxO transcription factors journal October 2014
Dynamic regulation of transcriptional states by chromatin and transcription factors journal December 2013
Structure/function relationships underlying regulation of FOXO transcription factors journal April 2008
The FoxO code journal April 2008
The role of FoxO in the regulation of metabolism journal April 2008
FOXO animal models reveal a variety of diverse roles for FOXO transcription factors journal April 2008
Insulin and epidermal growth factor suppress basal glucose-6-phosphatase catalytic subunit gene transcription through overlapping but distinct mechanisms journal December 2008
Identification of the differential distribution patterns of mRNAs and consensus binding sequences for mouse DAF-16 homologues journal July 2000
Disruption of forkhead transcription factor (FOXO) family members in mice reveals their functional diversification journal February 2004
Transcription factors mediate long-range enhancer-promoter interactions journal November 2009
Differential Role of Hepatocyte Nuclear Factor-1 in the Regulation of Glucose-6-phosphatase Catalytic Subunit Gene Transcription by cAMP in Liver- and Kidney-derived Cell Lines journal April 2000
FoxOs Function Synergistically to Promote Glucose Production journal November 2010
AMPK-dependent Repression of Hepatic Gluconeogenesis via Disruption of CREB·CRTC2 Complex by Orphan Nuclear Receptor Small Heterodimer Partner journal October 2010
Loss of Interdependent Binding by the FoxO1 and FoxA1/A2 Forkhead Transcription Factors Culminates in Perturbation of Active Chromatin Marks and Binding of Transcriptional Regulators at Insulin-sensitive Genes journal April 2016
The Three Insulin Response Sequences in the Glucose-6-phosphatase Catalytic Subunit Gene Promoter Are Functionally Distinct journal April 2003
A Combination of HNF-4 and Foxo1 Is Required for Reciprocal Transcriptional Regulation of Glucokinase and Glucose-6-phosphatase Genes in Response to Fasting and Feeding journal November 2008
Glucose-6-phosphatase Catalytic Subunit Gene Family journal October 2009
Evolutionary Origins of Transcription Factor Binding Site Clusters journal November 2011
Crystal structure of the human FOXO3a-DBD/DNA complex suggests the effects of post-translational modification journal November 2007
Conformational analysis of nucleic acids revisited: Curves+ journal July 2009
Widespread evidence of cooperative DNA binding by transcription factors in Drosophila development journal July 2013
Unified nomenclature for the winged helix/forkhead transcription factors journal January 2000
Homotypic clusters of transcription factor binding sites are a key component of human promoters and enhancers journal April 2010
Sparse matrix sampling: a screening method for crystallization of proteins journal August 1991
MOLREP an Automated Program for Molecular Replacement journal December 1997
Coot model-building tools for molecular graphics journal November 2004
MolProbity : all-atom structure validation for macromolecular crystallography journal December 2009
PHENIX: a comprehensive Python-based system for macromolecular structure solution journal January 2010
Discovery of Novel Forkhead Box O1 Inhibitors for Treating Type 2 Diabetes: Improvement of Fasting Glycemia in Diabetic db/db Mice journal August 2010
Regulation of Glucose Production by the Liver journal July 1999
Selective stimulation of G-6-Pase catalytic subunit but not G-6- P transporter gene expression by glucagon in vivo and cAMP in situ journal May 2004
FoxO gene family evolution in vertebrates journal January 2009
The Glucose-6-Phosphatase Catalytic Subunit Gene Promoter Contains Both Positive and Negative Glucocorticoid Response Elements journal December 2005
Correlation between FOXO1a (FKHR) and FOXO3a (FKHRL1) Binding and the Inhibition of Basal Glucose-6-Phosphatase Catalytic Subunit Gene Transcription by Insulin journal November 2006
Dynamic FoxO transcription factors journal August 2007
FoxO1 Inhibitors: The Future Medicine for Metabolic Disorders? journal July 2016
Targeting Foxo1 in Mice Using Antisense Oligonucleotide Improves Hepatic and Peripheral Insulin Action journal June 2006
FoxO6 Integrates Insulin Signaling With Gluconeogenesis in the Liver journal September 2011
CREB and FoxO1: two transcription factors for the regulation of hepatic gluconeogenesis journal December 2013

Cited By (5)

Cannabinoid receptor 1 knockout alleviates hepatic steatosis by downregulating perilipin 2 journal September 2019
Structural basis for DNA recognition by FOXC2 journal February 2019
AMPK and AKT protein kinases hierarchically phosphorylate the N-terminus of the FOXO1 transcription factor, modulating interactions with 14-3-3 proteins journal July 2019
DNA-mediated dimerization on a compact sequence signature controls enhancer engagement and regulation by FOXA1 journal April 2018
AMPK and AKT protein kinases hierarchically phosphorylate the N-terminus of the FOXO1 transcription factor, modulating interactions with 14-3-3 proteins text January 2019

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