821P

THREE-DIMENSIONAL STRUCTURES AND PROPERTIES OF A TRANSFORMING AND A NONTRANSFORMING GLYCINE-12 MUTANT OF P21H-RAS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Work: 0.220 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Three-dimensional structures and properties of a transforming and a nontransforming glycine-12 mutant of p21H-ras.

Franken, S.M.Scheidig, A.J.Krengel, U.Rensland, H.Lautwein, A.Geyer, M.Scheffzek, K.Goody, R.S.Kalbitzer, H.R.Pai, E.F.Wittinghofer, A.

(1993) Biochemistry 32: 8411-8420

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The three-dimensional structures and biochemical properties of two mutants of the G-domain (residues 1-166) of p21H-ras, p21 (G12D) and p21 (G12P), have been determined in the triphosphate-bound form using guanosine 5'-(beta,gamma-imido)triphosphate ...

    The three-dimensional structures and biochemical properties of two mutants of the G-domain (residues 1-166) of p21H-ras, p21 (G12D) and p21 (G12P), have been determined in the triphosphate-bound form using guanosine 5'-(beta,gamma-imido)triphosphate (GppNHp). They correspond to the most frequent oncogenic and the only nononcogenic mutation of Gly-12, respectively. The G12D mutation is the only mutant analyzed so far that crystallizes in a space group different from wild type, and the atomic model of the protein shows the most drastic changes of structure around the active site as compared to wild-type p21. This is due to the interactions of the aspartic acid side chain with Tyr-32, Gln-61, and the gamma-phosphate, which result in reduced mobility of these structural elements. The interaction between the carboxylate group of Asp-12 and the gamma-phosphate is mediated by a shared proton, which we show by 31P NMR measurements to exist in solution as well. The structure of p21 (G12P) is remarkably similar to that of wild-type p21 in the active site, including the position of the nucleophilic water. The pyrrolidine ring of Pro-12 points outward and seems to be responsible for the weaker affinity toward GAP (GTPase-activating protein) and the failure of GAP to stimulate GTP hydrolysis.


    Related Citations: 
    • Time-Resolved Crystallography on H-Ras P21
      Scheidig, A.J.,Pai, E.F.,Schlichting, I.,Corrie, J.,Reid, G.P.,Wittinghofer, A.,Goody, R.S.
      (1992) Philos.Trans.R.Soc.London A 340: 263
    • Three-Dimensional Structures of H-Ras P21 Mutants: Molecular Basis for Their Inability to Function as Signal Switch Molecules
      Krengel, U.,Schlichting, I.,Scherer, A.,Schumann, R.,Frech, M.,John, J.,Kabsch, W.,Pai, E.F.,Wittinghofer, A.
      (1990) Cell 62: 539
    • Refined Crystal Structure of the Triphosphate Conformation of H-Ras P21 at 1.35 Angstroms Resolution: Implications for the Mechanism of GTP Hydrolysis
      Pai, E.F.,Krengel, U.,Petsko, G.A.,Goody, R.S.,Kabsch, W.,Wittinghofer, A.
      (1990) Embo J. 9: 2351


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
C-H-RAS P21 PROTEIN
A
166Homo sapiensMutation(s): 1 
Gene Names: HRAS (HRAS1)
Find proteins for P01112 (Homo sapiens)
Go to Gene View: HRAS
Go to UniProtKB:  P01112
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download SDF File 
Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
GNP
Query on GNP

Download SDF File 
Download CCD File 
A
PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER
C10 H17 N6 O13 P3
UQABYHGXWYXDTK-UUOKFMHZSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Work: 0.220 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 40.200α = 90.00
b = 40.200β = 90.00
c = 160.100γ = 120.00
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1994-01-31
    Type: Initial release
  • Version 1.1: 2008-03-25
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2012-03-07
    Type: Database references
  • Version 1.4: 2017-11-29
    Type: Derived calculations, Other