2MA2 | pdb_00002ma2

Solution structure of RasGRP2 EF hands bound to calcium

• PDB DOI: https://doi.org/10.2210/pdb2MA2/pdb
• BMRB: 19319

• Classification: CALCIUM-BINDING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2013-06-24 Released: 2013-08-21 
• Deposition Author(s): Kuriyan, J., Iwig, J., Vercoulen, Y., Das, R., Barros, T., Limnander, A., Che, Y., Pelton, J., Wemmer, D., Roose, J.

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Experimental Data Snapshot

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

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

• PubMed: 23908768 
• DOI: https://doi.org/10.7554/eLife.00813
• Primary Citation 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.

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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.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 9.22 kDa 
• Atom Count: 647 
• Modeled Residue Count: 81 
• Deposited Residue Count: 81 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
RAS guanyl-releasing protein 2	A	81	Homo sapiens	Mutation(s): 0  Gene Names: RASGRP2, CDC25L, MCG7
UniProt & NIH Common Fund Data Resources
Find proteins for Q7LDG7 (Homo sapiens) Explore Q7LDG7  Go to UniProtKB:  Q7LDG7
PHAROS:  Q7LDG7 GTEx:  ENSG00000068831

Experimental Data & Validation

Experimental Data

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-08-21 
Deposition Author(s): Kuriyan, J., Iwig, J., Vercoulen, Y., Das, R., Barros, T., Limnander, A., Che, Y., Pelton, J., Wemmer, D., Roose, J.

Revision History  

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