4QFS image
Entry Detail
PDB ID:
4QFS
Title:
Structure of AMPK in complex with Br2-A769662core activator and STAUROSPORINE inhibitor
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2014-05-21
Release Date:
2014-08-06
Method Details:
Experimental Method:
Resolution:
3.55 Å
R-Value Free:
0.26
R-Value Work:
0.22
R-Value Observed:
0.22
Space Group:
P 61 2 2
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:5'-AMP-activated protein kinase catalytic subunit alpha-1
Mutations:Deletion 470-524; replaced by ASGGPGGS
Chain IDs:A
Chain Length:503
Number of Molecules:1
Biological Source:Rattus norvegicus
Polymer Type:polypeptide(L)
Description:5'-AMP-activated protein kinase subunit beta-1
Mutations:S108D
Chain IDs:B
Chain Length:204
Number of Molecules:1
Biological Source:Rattus norvegicus
Polymer Type:polypeptide(L)
Description:5'-AMP-activated protein kinase subunit gamma-1
Chain IDs:C
Chain Length:330
Number of Molecules:1
Biological Source:Rattus norvegicus
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
TPO A THR PHOSPHOTHREONINE
Primary Citation
Structural Basis for AMPK Activation: Natural and Synthetic Ligands Regulate Kinase Activity from Opposite Poles by Different Molecular Mechanisms.
Structure 22 1161 1172 (2014)
PMID: 25066137 DOI: 10.1016/j.str.2014.06.009

Abstact

AMP-activated protein kinase (AMPK) is a principal metabolic regulator affecting growth and response to cellular stress. Comprised of catalytic and regulatory subunits, each present in multiple forms, AMPK is best described as a family of related enzymes. In recent years, AMPK has emerged as a desirable target for modulation of numerous diseases, yet clinical therapies remain elusive. Challenges result, in part, from an incomplete understanding of the structure and function of full-length heterotrimeric complexes. In this work, we provide the full-length structure of the widely expressed α1β1γ1 isoform of mammalian AMPK, along with detailed kinetic and biophysical characterization. We characterize binding of the broadly studied synthetic activator A769662 and its analogs. Our studies follow on the heels of the recent disclosure of the α2β1γ1 structure and provide insight into the distinct molecular mechanisms of AMPK regulation by AMP and A769662.

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Primary Citation of related structures