1PLL

CRYSTALLOGRAPHIC STUDIES ON P21H-RAS USING SYNCHROTRON LAUE METHOD: IMPROVEMENT OF CRYSTAL QUALITY AND MONITORING OF THE GTPASE REACTION AT DIFFERENT TIME POINTS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Work: 0.206 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystallographic studies on p21(H-ras) using the synchrotron Laue method: improvement of crystal quality and monitoring of the GTPase reaction at different time points.

Scheidig, A.J.Sanchez-Llorente, A.Lautwein, A.Pai, E.F.Corrie, J.E.Reid, G.P.Wittinghofer, A.Goody, R.S.

(1994) Acta Crystallogr.,Sect.D 50: 512-520

  • DOI: 10.1107/S090744499301443X
  • Primary Citation of Related Structures:  1PLJ, 1PLK

  • PubMed Abstract: 
  • The parameters affecting the crystal quality of complexes between p21(H-ras) and caged GTP have been investigated. The use of pure diastereomers of caged GTP complexed to the more stable p21(G12P)' mutant of p21 and the addition of n-octyl-beta-D-glu ...

    The parameters affecting the crystal quality of complexes between p21(H-ras) and caged GTP have been investigated. The use of pure diastereomers of caged GTP complexed to the more stable p21(G12P)' mutant of p21 and the addition of n-octyl-beta-D-glucopyranoside improved the reproducibility and decreased the mosaicity of the crystals significantly. Furthermore, the crystallization technique was changed from the batch method to the sitting-drop technique. With the availability of a larger yield of well ordered crystals, it was possible to extend the time-resolved crystallographic investigations on p21(H-ras). A structure of p21(G12P)':GTP could be obtained 2 min after photolytic removal of the cage group and led to the identification of a previously unidentified conformation for the so-called catalytically active loop L4. The refinement of five data sets collected within 2 min at different times (2-4, 11-13, 20-22, 30-32 and 90-92 min) after the initiation of the intrinsic GTPase reaction of the protein indicates that the synchrotron Laue method can be used to detect small structural changes and alternative conformations, but is presently limited in the analysis of larger rearrangements since these produce diffuse and broken electron density.


    Related Citations: 
    • Time Resolved Crystallography on H-Ras P21
      Scheidig, A.J.,Pai, E.F.,Schlichting, I.,Corrie, J.E.T.,Reid, G.P.,Wittinghofer, A.,Goody, R.S.
      (1992) Philos.Trans.R.Soc.London A 340: 263


    Organizational Affiliation

    Max-Planck-Institut für medizinische Forschung, Abteilung Biophysik, Heidelberg, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
C-H-RAS P21 PROTEIN
A
166Homo sapiensGene Names: HRAS (HRAS1)
Find proteins for P01112 (Homo sapiens)
Go to Gene View: HRAS
Go to UniProtKB:  P01112
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GDP
Query on GDP

Download SDF File 
Download CCD File 
A
GUANOSINE-5'-DIPHOSPHATE
C10 H15 N5 O11 P2
QGWNDRXFNXRZMB-UUOKFMHZSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Work: 0.206 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 39.900α = 90.00
b = 39.900β = 90.00
c = 158.400γ = 120.00
Software Package:
Software NamePurpose
X-PLORphasing
X-PLORmodel building
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1994-07-31
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance