6B6U

Pyruvate Kinase M2 mutant - S437Y


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.149 
  • R-Value Work: 0.130 
  • R-Value Observed: 0.131 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

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

Srivastava, D.Razzaghi, M.Henzl, M.T.Dey, M.

(2017) Biochemistry 56: 6517-6520

  • DOI: https://doi.org/10.1021/acs.biochem.7b01013
  • Primary Citation of Related Structures:  
    6B6U

  • PubMed Abstract: 

    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. 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 K d of ∼20 μM. Interestingly, however, the protein crystallizes as a tetramer, providing insight into the structural basis for impaired FBP binding of S437Y.


  • Organizational Affiliation

    Department of Chemistry, University of Iowa , Iowa City, Iowa 52242, United States.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Pyruvate kinase PKM
A, B
525Homo sapiensMutation(s): 1 
Gene Names: PKMOIP3PK2PK3PKM2
EC: 2.7.1.40
UniProt & NIH Common Fund Data Resources
Find proteins for P14618 (Homo sapiens)
Explore P14618 
Go to UniProtKB:  P14618
PHAROS:  P14618
GTEx:  ENSG00000067225 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP14618
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 9 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
B3P
Query on B3P

Download Ideal Coordinates CCD File 
K [auth A],
U [auth B]
2-[3-(2-HYDROXY-1,1-DIHYDROXYMETHYL-ETHYLAMINO)-PROPYLAMINO]-2-HYDROXYMETHYL-PROPANE-1,3-DIOL
C11 H26 N2 O6
HHKZCCWKTZRCCL-UHFFFAOYSA-N
PG4
Query on PG4

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S [auth B]TETRAETHYLENE GLYCOL
C8 H18 O5
UWHCKJMYHZGTIT-UHFFFAOYSA-N
PEG
Query on PEG

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J [auth A]DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
OXL
Query on OXL

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D [auth A],
M [auth B]
OXALATE ION
C2 O4
MUBZPKHOEPUJKR-UHFFFAOYSA-L
EDO
Query on EDO

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T [auth B]1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
SCN
Query on SCN

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G [auth A]
H [auth A]
I [auth A]
P [auth B]
Q [auth B]
G [auth A],
H [auth A],
I [auth A],
P [auth B],
Q [auth B],
R [auth B]
THIOCYANATE ION
C N S
ZMZDMBWJUHKJPS-UHFFFAOYSA-M
K
Query on K

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E [auth A],
N [auth B]
POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
CL
Query on CL

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F [auth A],
O [auth B]
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
MG
Query on MG

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C [auth A],
L [auth B]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.149 
  • R-Value Work: 0.130 
  • R-Value Observed: 0.131 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 110.35α = 90
b = 93.61β = 95.64
c = 109.36γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
SCALAdata scaling
PHASERphasing
PDB_EXTRACTdata extraction
XDSdata processing
Cootmodel building

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-12-20
    Type: Initial release
  • Version 1.1: 2018-01-03
    Changes: Database references
  • Version 1.2: 2023-10-04
    Changes: Advisory, Data collection, Database references, Derived calculations, Refinement description