Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Structural Investigation of a Dimeric Variant of Pyruvate Kinase Muscle Isoform 2

Journal Article · · Biochemistry

Pyruvate kinase muscle isoform 2 (PKM2) catalyzes the terminal step in glycolysis, transferring a phosphoryl group from phosphoenolpyruvate to ADP, to produce pyruvate and ATP. PKM2 activity is allosterically regulated by fructose 1,6-bisphosphate (FBP), an upstream glycolytic intermediate. FBP stabilizes the tetrameric form of the enzyme. In its absence, the PKM2 tetramers dissociate, yielding a dimer–monomer mixture having lower enzymatic activity. Here, the S437Y variant of PKM2 is incapable of binding FBP. Consistent with that defect, we find that S437Y exists in a monomer–dimer equilibrium in solution, with a Kd of ~20 μM. Interestingly, however, the protein crystallizes as a tetramer, providing insight into the structural basis for impaired FBP binding of S437Y.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1423366
Journal Information:
Biochemistry, Journal Name: Biochemistry Journal Issue: 50 Vol. 56; ISSN 0006-2960
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
ENGLISH

References (26)

Using Situs for the integration of multi-resolution structures journal January 2010
Pyruvate kinase isozyme type M2 (PKM2) interacts and cooperates with Oct-4 in regulating transcription journal January 2008
Accurate SAXS Profile Computation and its Assessment by Contrast Variation Experiments journal August 2013
Pyruvate Kinase M2 Is a PHD3-Stimulated Coactivator for Hypoxia-Inducible Factor 1 journal May 2011
Mitogenic and Oncogenic Stimulation of K433 Acetylation Promotes PKM2 Protein Kinase Activity and Nuclear Localization journal November 2013
Succinyl-5-aminoimidazole-4-carboxamide-1-ribose 5′-Phosphate (SAICAR) Activates Pyruvate Kinase Isoform M2 (PKM2) in Its Dimeric Form journal August 2016
Structural Basis for Tumor Pyruvate Kinase M2 Allosteric Regulation and Catalysis , journal July 2005
Differentiating a Ligand's Chemical Requirements for Allosteric Interactions from Those for Protein Binding. Phenylalanine Inhibition of Pyruvate Kinase , journal May 2006
Distinguishing the Interactions in the Fructose 1,6-Bisphosphate Binding Site of Human Liver Pyruvate Kinase That Contribute to Allostery journal February 2015
Nuclear PKM2 regulates β-catenin transactivation upon EGFR activation journal December 2011
Serine is a natural ligand and allosteric activator of pyruvate kinase M2 journal October 2012
ERK1/2-dependent phosphorylation and nuclear translocation of PKM2 promotes the Warburg effect journal November 2012
PKM2 regulates the Warburg effect and promotes HMGB1 release in sepsis journal July 2014
A survey of proteins encoded by non-synonymous single nucleotide polymorphisms reveals a significant fraction with altered stability and activity journal October 2009
Activation of Liver Pyruvate Kinase by Fructose 1,6-Diphosphate journal February 1967
M2 pyruvate kinase provides a mechanism for nutrient sensing and regulation of cell proliferation journal March 2013
l-cysteine reversibly inhibits glucose-induced biphasic insulin secretion and ATP production by inactivating PKM2 journal February 2015
FoXS, FoXSDock and MultiFoXS: Single-state and multi-state structural modeling of proteins and their complexes based on SAXS profiles journal May 2016
New developments in the ATSAS program package for small-angle scattering data analysis journal March 2012
Inhibition of Pyruvate Kinase M2 by Reactive Oxygen Species Contributes to Cellular Antioxidant Responses journal November 2011
SAICAR Stimulates Pyruvate Kinase Isoform M2 and Promotes Cancer Cell Survival in Glucose-Limited Conditions journal October 2012
PKM2, a Central Point of Regulation in Cancer Metabolism journal January 2013
Current Status of Tumor M2 Pyruvate Kinase (Tumor M2-PK) as a Biomarker of Gastrointestinal Malignancy journal June 2007
In Silico Screening, Genotyping, Molecular Dynamics Simulation and Activity Studies of SNPs in Pyruvate Kinase M2 journal March 2015
PKM2 and cancer: The function of PKM2 beyond glycolysis journal January 2016
Cancer metabolism meets systems biology: Pyruvate kinase isoform PKM2 is a metabolic master regulator journal January 2013

Cited By (1)

Purification and Characterization of Prolyl Hydroxylase 3/Pyruvate Kinase Isoform 2 Protein Complex journal November 2019