Enterococcus casseliflavus glycerol kinase

Experimental Data Snapshot

  • Resolution: 2.50 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.221 

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This is version 1.2 of the entry. See complete history


Structures of Enterococcal Glycerol Kinase in the Absence and Presence of Glycerol: Correlation of conformation to substrate binding and a mechanism of activation by phosphorylation

Yeh, J.I.Charrier, V.Paulo, J.Hou, L.Darbon, E.Claiborne, A.Hol, W.G.Deutscher, J.

(2004) Biochemistry 43: 362-373

  • DOI: https://doi.org/10.1021/bi034258o
  • Primary Citation of Related Structures:  
    1R59, 1XUP

  • PubMed Abstract: 

    The first structure of a glycerol kinase from a Gram-positive organism, Enterococcus casseliflavus, has been determined to 2.8 A resolution in the presence of glycerol and to 2.5 A resolution in the absence of substrate. The substrate-induced closure of 7 degrees is significantly smaller than that reported for hexokinase, a model for substrate-mediated domain closure that has been proposed for glycerol kinase. Despite the 78% level of sequence identity and conformational similarity in the catalytic cleft regions of the En. casseliflavus and Escherichia coli glycerol kinases, remarkable structural differences have now been identified. These differences correlate well with their divergent regulatory schemes of activation by phosphorylation in En. casseliflavus and allosteric inhibition in E. coli. On the basis of our structural results, we propose a mechanism by which the phosphorylation of a histidyl residue located 25 A from the active site results in a 10-15-fold increase in the activity of the enterococcal glycerol kinase.

  • Organizational Affiliation

    Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, Providence, Rhode Island 02912, USA. Joanne_Yeh@brown.edu

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Glycerol kinaseA [auth O],
B [auth X]
505Enterococcus casseliflavusMutation(s): 0 
Gene Names: glpK
Find proteins for O34153 (Enterococcus casseliflavus)
Explore O34153 
Go to UniProtKB:  O34153
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO34153
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.50 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.221 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 67.829α = 90
b = 107.11β = 90
c = 201.12γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
SCALEPACKdata scaling
HKL-2000data reduction

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-10-12
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance