3C39

Crystal Structure of human phosphoglycerate kinase bound to 3-phosphoglycerate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.191 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Molecular basis for the lack of enantioselectivity of human 3-phosphoglycerate kinase

Gondeau, C.Chaloin, L.Lallemand, P.Roy, B.Perigaud, C.Barman, T.Varga, A.Vas, M.Lionne, C.Arold, S.T.

(2008) Nucleic Acids Res. 36: 3620-3629

  • DOI: 10.1093/nar/gkn212
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Non-natural L-nucleoside analogues are increasingly used as therapeutic agents to treat cancer and viral infections. To be active, L-nucleosides need to be phosphorylated to their respective triphosphate metabolites. This stepwise phosphorylation rel ...

    Non-natural L-nucleoside analogues are increasingly used as therapeutic agents to treat cancer and viral infections. To be active, L-nucleosides need to be phosphorylated to their respective triphosphate metabolites. This stepwise phosphorylation relies on human enzymes capable of processing L-nucleoside enantiomers. We used crystallographic analysis to reveal the molecular basis for the low enantioselectivity and the broad specificity of human 3-phosphoglycerate kinase (hPGK), an enzyme responsible for the last step of phosphorylation of many nucleotide derivatives. Based on structures of hPGK in the absence of nucleotides, and bound to L and d forms of MgADP and MgCDP, we show that a non-specific hydrophobic clamp to the nucleotide base, as well as a water-filled cavity behind it, allows high flexibility in the interaction between PGK and the bases. This, combined with the dispensability of hydrogen bonds to the sugar moiety, and ionic interactions with the phosphate groups, results in the positioning of different nucleotides so to expose their diphosphate group in a position competent for catalysis. Since the third phosphorylation step is often rate limiting, our results are expected to alleviate in silico tailoring of L-type prodrugs to assure their efficient metabolic processing.


    Organizational Affiliation

    Centre d'études d'agents Pathogènes et Biotechnologies pour la Santé, UMR 5236, CNRS-Universités Montpellier 1 et 2, Institut de Biologie, 4 bd Henri IV, CS69033, 34965 Montpellier cedex 2, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Phosphoglycerate kinase 1
A, B
420Homo sapiensMutation(s): 0 
Gene 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 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
3PG
Query on 3PG

Download SDF File 
Download CCD File 
A, B
3-PHOSPHOGLYCERIC ACID
C3 H7 O7 P
OSJPPGNTCRNQQC-UWTATZPHSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
3PGKd: 109000 nM (100) BINDINGDB
3PGKd: 109000 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.191 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 35.616α = 79.18
b = 55.790β = 84.33
c = 93.230γ = 83.23
Software Package:
Software NamePurpose
MOSFLMdata reduction
REFMACrefinement
SCALAdata scaling
ADSCdata collection
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-07-01
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance