2GEB

Crystal structure of the Thermoanaerobacter tengcongensis hypoxanthine-guanine phosphoribosyltransferase L160I mutant: insights into the inhibitor design


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.204 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of Thermoanaerobacter tengcongensis hypoxanthine-guanine phosphoribosyl transferase L160I mutant--insights into inhibitor design.

Chen, Q.You, D.Liang, Y.Su, X.Gu, X.Luo, M.Zheng, X.

(2007) Febs J. 274: 4408-4415

  • DOI: 10.1111/j.1742-4658.2007.05970.x

  • PubMed Abstract: 
  • Hypoxanthine-guanine phosphoribosyltransferase (HGPRT) is a potential target for structure-based inhibitor design for the treatment of parasitic diseases. We created point mutants of Thermoanaerobacter tengcongensis HGPRT and tested their activities ...

    Hypoxanthine-guanine phosphoribosyltransferase (HGPRT) is a potential target for structure-based inhibitor design for the treatment of parasitic diseases. We created point mutants of Thermoanaerobacter tengcongensis HGPRT and tested their activities to identify side chains that were important for function. Mutating residues Leu160 and Lys133 substantially diminished the activity of HGPRT, confirming their importance in catalysis. All 11 HGPRT mutants were subject to crystallization screening. The crystal structure of one mutant, L160I, was determined at 1.7 A resolution. Surprisingly, the active site is occupied by a peptide from the N-terminus of a neighboring tetramer. These crystal contacts suggest an alternate strategy for structure-based inhibitor design.


    Organizational Affiliation

    National Laboratory of Protein Engineering and Plant Genetic Engineering, Peking University, Beijing, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Hypoxanthine-guanine phosphoribosyltransferase
A
185Caldanaerobacter subterraneus subsp. tengcongensis (strain DSM 15242 / JCM 11007 / NBRC 100824 / MB4)Mutation(s): 3 
Gene Names: Hpt
EC: 2.4.2.8
Find proteins for Q8R7L0 (Caldanaerobacter subterraneus subsp. tengcongensis (strain DSM 15242 / JCM 11007 / NBRC 100824 / MB4))
Go to UniProtKB:  Q8R7L0
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.204 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 52.210α = 90.00
b = 88.360β = 90.00
c = 93.030γ = 90.00
Software Package:
Software NamePurpose
PROTEUM PLUSdata reduction
PROTEUM PLUSdata scaling
CNSrefinement
CNSphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2006-03-19 
  • Released Date: 2007-04-03 
  • Deposition Author(s): Chen, Q., Luo, M.

Revision History 

  • Version 1.0: 2007-04-03
    Type: Initial release
  • Version 1.1: 2007-10-16
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance