Solution structure of RasGRP2 EF hands bound to calcium

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report

This is version 1.1 of the entry. See complete history


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: https://doi.org/10.7554/eLife.00813
  • Primary Citation of Related Structures:  
    2MA2, 4L9M, 4L9U

  • 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. 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.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
RAS guanyl-releasing protein 281Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for Q7LDG7 (Homo sapiens)
Explore Q7LDG7 
Go to UniProtKB:  Q7LDG7
GTEx:  ENSG00000068831 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ7LDG7
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-08-21
    Type: Initial release
  • Version 1.1: 2024-05-01
    Changes: Data collection, Database references