4H6Y

Crystal structure of the DH-PH-PH domain of FARP1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.09 Å
  • R-Value Free: 0.317 
  • R-Value Work: 0.289 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structural Basis for Autoinhibition of the Guanine Nucleotide Exchange Factor FARP2.

He, X.Kuo, Y.C.Rosche, T.J.Zhang, X.

(2013) Structure 21: 355-364

  • DOI: 10.1016/j.str.2013.01.001
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • FARP2 is a Dbl-family guanine nucleotide exchange factor (GEF) that contains a 4.1, ezrin, radixin and moesin (FERM) domain, a Dbl-homology (DH) domain and two pleckstrin homology (PH) domains. FARP2 activates Rac1 or Cdc42 in response to upstream si ...

    FARP2 is a Dbl-family guanine nucleotide exchange factor (GEF) that contains a 4.1, ezrin, radixin and moesin (FERM) domain, a Dbl-homology (DH) domain and two pleckstrin homology (PH) domains. FARP2 activates Rac1 or Cdc42 in response to upstream signals, thereby regulating processes such as neuronal axon guidance and bone homeostasis. How the GEF activity of FARP2 is regulated remained poorly understood. We have determined the crystal structures of the catalytic DH domain and the DH-PH-PH domains of FARP2. The structures reveal an auto-inhibited conformation in which the GEF substrate-binding site is blocked collectively by the last helix in the DH domain and the two PH domains. This conformation is stabilized by multiple interactions among the domains and two well-structured inter-domain linkers. Our cell-based activity assays confirm the suppression of the FARP2 GEF activity by these auto-inhibitory elements.


    Organizational Affiliation

    Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, TX 75063, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
FERM, RhoGEF and pleckstrin domain-containing protein 1
A, B
501Homo sapiensMutation(s): 0 
Gene Names: FARP1 (CDEP, PLEKHC2)
Find proteins for Q9Y4F1 (Homo sapiens)
Go to Gene View: FARP1
Go to UniProtKB:  Q9Y4F1
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.09 Å
  • R-Value Free: 0.317 
  • R-Value Work: 0.289 
  • Space Group: P 32
Unit Cell:
Length (Å)Angle (°)
a = 142.237α = 90.00
b = 142.237β = 90.00
c = 105.180γ = 120.00
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PHENIXrefinement
HKL-2000data reduction
PHENIXphasing
HKL-2000data scaling
PDB_EXTRACTdata extraction
HKL-3000data collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2012-09-19 
  • Released Date: 2013-03-13 
  • Deposition Author(s): He, X., Zhang, X.

Revision History 

  • Version 1.0: 2013-03-13
    Type: Initial release
  • Version 1.1: 2013-03-27
    Type: Database references
  • Version 1.2: 2016-12-21
    Type: Structure summary
  • Version 1.3: 2017-11-15
    Type: Refinement description