2YBE

The structure of the fully closed conformation of human PGK in complex with L-ADP, 3PG and the TSA aluminium tetrafluoride at 2.0 A resolution


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.193 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Interaction of Human 3-Phosphoglycerate Kinase with its Two Substrates: Is Substrate Antagonism a Kinetic Advantage?

Lallemand, P.Chaloin, L.Roy, B.Barman, T.Bowler, M.W.Lionne, C.

(2011) J.Mol.Biol. 409: 742

  • DOI: 10.1016/j.jmb.2011.04.048
  • Primary Citation of Related Structures:  2Y3I

  • PubMed Abstract: 
  • Substrate antagonism has been described for a variety of enzymes with more than one substrate and is characterized by a lowering of the affinity of one substrate in the presence of the other(s). 3-Phosphoglycerate kinase (PGK) catalyzes phosphotransf ...

    Substrate antagonism has been described for a variety of enzymes with more than one substrate and is characterized by a lowering of the affinity of one substrate in the presence of the other(s). 3-Phosphoglycerate kinase (PGK) catalyzes phosphotransfer from 1,3-bisphosphoglycerate (bPG) to ADP to give 3-phosphoglycerate (PG) and ATP, and is subject to substrate antagonism. Because of the instability of bPG, antagonism has only been described between PG and ATP or ADP. Here, we show that antagonism also occurs between bPG and ADP. Using the stopped-flow method, we show that the dissociation constant for one substrate increases in the presence of the other, and that this decrease in affinity is mainly due to an increase in the dissociation rate constant. As a consequence, there is an increase in the overall interaction kinetics. Interestingly, in the presence of the mirror image of natural d-ADP, l-ADP (a good substrate for PGK), antagonism is absent. Using rapid-quench-flow, we studied the kinetics of ATP formation. The time courses present the following: (1) a lag with l-ADP, but not with d-ADP, the kinetics of which were similar to the interaction kinetics measured by stopped-flow; (2) a burst that is directed by the phosphotransfer; and (3) a steady-state that is rate limited by the release of product kinetics. Structural explanations for these results are proposed by analyzing the crystallographic structure of the fully closed conformation of PGK in complex with l-ADP, PG, and the transition-state analogue AlF(4)(-) compared to previously determined structures.


    Organizational Affiliation

    Centre d'études d'agents Pathogènes et Biotechnologies pour le Santé, UMR 5236, CNRS-Universités Montpellier 1 and 2, 1919 route de Mende, 34293 Montpellier Cedex 5, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PHOSPHOGLYCERATE KINASE 1
A
417Homo sapiensGene Names: PGK1 (PGKA)
EC: 2.7.2.3
Find proteins for P00558 (Homo sapiens)
Go to Gene View: PGK1
Go to UniProtKB:  P00558
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
LA8
Query on LA8

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A
L-ADENOSINE-5'-DIPHOSPHATE
L-ADP
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-DEGSGYPDSA-N
 Ligand Interaction
CL
Query on CL

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A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
ALF
Query on ALF

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A
TETRAFLUOROALUMINATE ION
Al F4
UYOMQIYKOOHAMK-UHFFFAOYSA-J
 Ligand Interaction
MG
Query on MG

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A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
3PG
Query on 3PG

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A
3-PHOSPHOGLYCERIC ACID
C3 H7 O7 P
OSJPPGNTCRNQQC-UWTATZPHSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.193 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 39.202α = 90.00
b = 91.030β = 90.00
c = 108.807γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
SCALAdata scaling
XDSdata reduction
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-04-27
    Type: Initial release
  • Version 1.1: 2011-06-23
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance