1CTQ

STRUCTURE OF P21RAS IN COMPLEX WITH GPPNHP AT 100 K


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.26 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.172 
  • R-Value Observed: 0.172 

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Ligand Structure Quality Assessment 


This is version 1.5 of the entry. See complete history


Literature

The pre-hydrolysis state of p21(ras) in complex with GTP: new insights into the role of water molecules in the GTP hydrolysis reaction of ras-like proteins.

Scheidig, A.J.Burmester, C.Goody, R.S.

(1999) Structure 7: 1311-1324

  • DOI: https://doi.org/10.1016/s0969-2126(00)80021-0
  • Primary Citation of Related Structures:  
    1CTQ, 1QRA

  • PubMed Abstract: 

    In numerous biological events the hydrolysis of guanine triphosphate (GTP) is a trigger to switch from the active to the inactive protein form. In spite of the availability of several high-resolution crystal structures, the details of the mechanism of nucleotide hydrolysis by GTPases are still unclear. This is partly because the structures of the proteins in their active states had to be determined in the presence of non-hydrolyzable GTP analogues (e.g. GppNHp). Knowledge of the structure of the true Michaelis complex might provide additional insights into the intrinsic protein hydrolysis mechanism of GTP and related nucleotides.


  • Organizational Affiliation

    Abteilung für Physikalische Biochemie, Max-Planck Institute for Molecular Physiology, Dortmund, 44227, Germany. scheidig@mpi-dortmund.mpg.de


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
PROTEIN (TRANSFORMING PROTEIN P21/H-RAS-1)166Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P01112 (Homo sapiens)
Explore P01112 
Go to UniProtKB:  P01112
PHAROS:  P01112
GTEx:  ENSG00000174775 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01112
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
GNP
Query on GNP

Download Ideal Coordinates CCD File 
C [auth A]PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER
C10 H17 N6 O13 P3
UQABYHGXWYXDTK-UUOKFMHZSA-N
MG
Query on MG

Download Ideal Coordinates CCD File 
B [auth A]MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.26 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.172 
  • R-Value Observed: 0.172 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 39.67α = 90
b = 39.67β = 90
c = 158.409γ = 120
Software Package:
Software NamePurpose
X-PLORmodel building
SHELXL-97refinement
FRAMBOdata collection
XDSdata scaling
XSCALEdata scaling
X-PLORphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1999-11-15
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-10-04
    Changes: Advisory, Refinement description
  • Version 1.4: 2018-01-31
    Changes: Experimental preparation
  • Version 1.5: 2023-08-09
    Changes: Advisory, Data collection, Database references, Derived calculations, Refinement description