1GUA

HUMAN RAP1A, RESIDUES 1-167, DOUBLE MUTANT (E30D,K31E) COMPLEXED WITH GPPNHP AND THE RAS-BINDING-DOMAIN OF HUMAN C-RAF1, RESIDUES 51-131


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Work: 0.220 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Ras/Rap effector specificity determined by charge reversal.

Nassar, N.Horn, G.Herrmann, C.Block, C.Janknecht, R.Wittinghofer, A.

(1996) Nat.Struct.Mol.Biol. 3: 723-729


  • PubMed Abstract: 
  • Members of the Ras subfamily of small GTP-binding proteins have been shown to be promiscuous towards a variety of putative effector molecules such as the protein kinase c-Raf and the Ral-specific guanine nucleotide exchange factor (Ral-GEF). To addre ...

    Members of the Ras subfamily of small GTP-binding proteins have been shown to be promiscuous towards a variety of putative effector molecules such as the protein kinase c-Raf and the Ral-specific guanine nucleotide exchange factor (Ral-GEF). To address the question of specificity of interactions we have introduced the mutations E30D and K31E into Rap and show biochemically, by X-ray structure analysis and by transfection in vivo that the identical core effector region of Ras and Rap (residues 32-40) is responsible for molecular recognition, but that residues outside this region are responsible for the specificity of the interaction. The major determinant for the switch in specificity is the opposite charge of residue 31--Lys in Rap, Glu in Ras--which creates a favourable complementary interface for the Ras-Raf interaction.


    Related Citations: 
    • The 2.2 A Crystal Structure of the Ras-Binding Domain of the Serine/Threonine Kinase C-Raf1 in Complex with RAP1A and a GTP Analogue
      Nassar, N.,Horn, G.,Herrmann, C.,Scherer, A.,Mccormick, F.,Wittinghofer, A.
      (1995) Nature 375: 554
    • Quantitative Analysis of the Complex between P21Ras and the Ras-Binding Domain of the Human Raf-1 Protein Kinase
      Herrmann, C.,Martin, G.A.,Wittinghofer, A.
      (1995) J.Biol.Chem. 270: 2901
    • Quantitative Structure-Activity Analysis Correlating Ras/Raf Interaction in Vitro to Raf Activation in Vivo
      Block, C.,Janknecht, R.,Herrmann, C.,Nassar, N.,Wittinghofer, A.
      (1996) Nat.Struct.Mol.Biol. 3: 244


    Organizational Affiliation

    Max-Planck-Institut für molekulare Physiologie, Abteilung Strukturelle Biologie, Dortmund, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RAP1A
A
167Homo sapiensMutation(s): 2 
Gene Names: RAP1A (KREV1)
Find proteins for P62834 (Homo sapiens)
Go to Gene View: RAP1A
Go to UniProtKB:  P62834
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
C-RAF1
B
81Homo sapiensMutation(s): 0 
Gene Names: RAF1 (RAF)
EC: 2.7.11.1
Find proteins for P04049 (Homo sapiens)
Go to Gene View: RAF1
Go to UniProtKB:  P04049
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
B
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
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
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
GNPKd: 40 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Work: 0.220 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 44.500α = 90.00
b = 71.800β = 90.00
c = 100.300γ = 90.00
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
X-PLORphasing
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-01-11
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance