The conformation of a docking site for SH3 domains is pre-selected in the Guanine Nucleotide Exchange Factor Rlf

Experimental Data Snapshot

  • Resolution: 2.30 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.252 
  • R-Value Observed: 0.253 

wwPDB Validation   3D Report Full Report

This is version 1.2 of the entry. See complete history


The guanine nucleotide exchange factor Rlf interacts with SH3 domain-containing proteins via a binding site with a preselected conformation.

Popovic, M.Jakobi, A.J.Rensen-de Leeuw, M.Rehmann, H.

(2013) J Struct Biol 183: 312-319

  • DOI: https://doi.org/10.1016/j.jsb.2013.07.009
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Rlf is a guanine nucleotide exchange factor for the small G-proteins RalA and RalB and couples Ras- to Ral-signalling. Here the crystal structure of the catalytic module of Rlf consisting of a REM- and a CDC25-homology domain is determined. The structure is distinguished by an extended three stranded β-sheet called the flagpole. The flagpole is a conserved element in the RalGDS family of guanine nucleotide exchange factors and stabilises the orientation of the REM-domain relative to the CDC25-homology domain. A proline-rich sequence in the flagpole is unique to Rlf and several proteins that interact with this sequence by SH3 domains are identified. Conformational pre-selection results in a gain of affinity and contributes to the establishment of SH3 domain selectivity.

  • Organizational Affiliation

    Department of Molecular Cancer Research, Centre of Biomedical Genetics and Cancer Genomics Centre, University Medical Center Utrecht, Utrecht, The Netherlands.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Ral guanine nucleotide dissociation stimulator-like 2
A, B
473Mus musculusMutation(s): 0 
Gene Names: Rgl2Rab2lRlf
Find proteins for Q61193 (Mus musculus)
Explore Q61193 
Go to UniProtKB:  Q61193
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ61193
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.30 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.252 
  • R-Value Observed: 0.253 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 70.93α = 90
b = 75.62β = 98.15
c = 101.33γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
XSCALEdata scaling

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-09-11
    Type: Initial release
  • Version 1.1: 2017-11-15
    Changes: Refinement description
  • Version 1.2: 2023-11-08
    Changes: Data collection, Database references, Refinement description