4L9U

Structure of C-terminal coiled coil of RasGRP1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6014 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.201 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Structural analysis of autoinhibition in the Ras-specific exchange factor RasGRP1.

Iwig, J.S.Vercoulen, Y.Das, R.Barros, T.Limnander, A.Che, Y.Pelton, J.G.Wemmer, D.E.Roose, J.P.Kuriyan, J.

(2013) Elife 2: e00813-e00813

  • DOI: 10.7554/eLife.00813
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • RasGRP1 and SOS are Ras-specific nucleotide exchange factors that have distinct roles in lymphocyte development. RasGRP1 is important in some cancers and autoimmune diseases but, in contrast to SOS, its regulatory mechanisms are poorly understood. Ac ...

    RasGRP1 and SOS are Ras-specific nucleotide exchange factors that have distinct roles in lymphocyte development. RasGRP1 is important in some cancers and autoimmune diseases but, in contrast to SOS, its regulatory mechanisms are poorly understood. Activating signals lead to the membrane recruitment of RasGRP1 and Ras engagement, but it is unclear how interactions between RasGRP1 and Ras are suppressed in the absence of such signals. We present a crystal structure of a fragment of RasGRP1 in which the Ras-binding site is blocked by an interdomain linker and the membrane-interaction surface of RasGRP1 is hidden within a dimerization interface that may be stabilized by the C-terminal oligomerization domain. NMR data demonstrate that calcium binding to the regulatory module generates substantial conformational changes that are incompatible with the inactive assembly. These features allow RasGRP1 to be maintained in an inactive state that is poised for activation by calcium and membrane-localization signals. DOI:http://dx.doi.org/10.7554/eLife.00813.001.


    Organizational Affiliation

    Department of Molecular and Cell Biology , University of California, Berkeley , Berkeley , United States ; California Institute for Quantitative Biosciences , University of California, Berkeley , Berkeley , United States.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RAS guanyl-releasing protein 1
A, B
56Homo sapiensMutation(s): 0 
Gene Names: RASGRP1 (RASGRP)
Find proteins for O95267 (Homo sapiens)
Go to Gene View: RASGRP1
Go to UniProtKB:  O95267
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
GOL
Query on GOL

Download SDF File 
Download CCD File 
A, B
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6014 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.201 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 24.878α = 90.00
b = 165.047β = 90.00
c = 28.319γ = 90.00
Software Package:
Software NamePurpose
ADSCdata collection
SCALAdata scaling
XDSdata reduction
PHASERphasing
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-08-21
    Type: Initial release