1AGS

A SURFACE MUTANT (G82R) OF A HUMAN ALPHA-GLUTATHIONE S-TRANSFERASE SHOWS DECREASED THERMAL STABILITY AND A NEW MODE OF MOLECULAR ASSOCIATION IN THE CRYSTAL


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Work: 0.310 
  • R-Value Observed: 0.310 

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This is version 1.2 of the entry. See complete history


Literature

A surface mutant (G82R) of a human alpha-glutathione S-transferase shows decreased thermal stability and a new mode of molecular association in the crystal.

Zeng, K.Rose, J.P.Chen, H.C.Strickland, C.L.Tu, C.P.Wang, B.C.

(1994) Proteins 20: 259-263

  • DOI: 10.1002/prot.340200306
  • Primary Citation of Related Structures:  
    1AGS

  • PubMed Abstract: 
  • A chimeric enzyme (GST121) of the human alpha-glutathione S-transferases GST1-1 and GST2-2, which has improved catalytic efficiency and thermostability from its wild-type parent proteins, has been crystallized in a space group that is isomorphous with that reported for crystals of GST1-1 ...

    A chimeric enzyme (GST121) of the human alpha-glutathione S-transferases GST1-1 and GST2-2, which has improved catalytic efficiency and thermostability from its wild-type parent proteins, has been crystallized in a space group that is isomorphous with that reported for crystals of GST1-1. However, a single-site (G82R) mutant of GST121, which exhibits a significant reduction both in vitro and in vivo in protein thermostability, forms crystals that are not isomorphous with GST1-1. The mutant protein crystallizes in space group P2(1)2(1)2(1), with cell dimensions a = 49.5, b = 92.9, c = 115.9 A, and one dimer per asymmetric unit. Preliminary crystallographic results show that a mutation of the surface residue Gly 82 from a neutral to a charged residue causes new salt bridges to be formed among the GST dimers, suggesting that the G82R mutant might aggregate more readily than does GST121 in solution, resulting in a change of its solution properties.


    Organizational Affiliation

    Department of Crystallography and Biological Sciences, University of Pittsburgh, Pennsylvania 15260.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
GLUTATHIONE S-TRANSFERASE ALPHAA, B221synthetic constructMutation(s): 0 
Gene Names: PGTH121-G82R
EC: 2.5.1.18
Find proteins for P09210 (Homo sapiens)
Explore P09210 
Go to UniProtKB:  P09210
NIH Common Fund Data Resources
PHAROS:  P09210
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GTX
Query on GTX

Download Ideal Coordinates CCD File 
C [auth A], D [auth B]S-HEXYLGLUTATHIONE
C16 H30 N3 O6 S
HXJDWCWJDCOHDG-RYUDHWBXSA-O
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Work: 0.310 
  • R-Value Observed: 0.310 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 49.5α = 90
b = 92.9β = 90
c = 115.9γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
XENGENdata reduction
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1995-07-10
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance