5JCP

RhoGAP domain of ARAP3 in complex with RhoA in the transition state


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.189 

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Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Structural Basis for the Specific Recognition of RhoA by the Dual GTPase-activating Protein ARAP3

Bao, H.Li, F.Wang, C.Wang, N.Jiang, Y.Tang, Y.Wu, J.Shi, Y.

(2016) J Biol Chem 291: 16709-16719

  • DOI: https://doi.org/10.1074/jbc.M116.736140
  • Primary Citation of Related Structures:  
    5JCP, 5JD0

  • PubMed Abstract: 

    ARAP3 (Arf-GAP with Rho-GAP domain, ANK repeat, and PH domain-containing protein 3) is unique for its dual specificity GAPs (GTPase-activating protein) activity for Arf6 (ADP-ribosylation factor 6) and RhoA (Ras homolog gene family member A) regulated by phosphatidylinositol 3,4,5-trisphosphate and a small GTPase Rap1-GTP and is involved in regulation of cell shape and adhesion. However, the molecular interface between the ARAP3-RhoGAP domain and RhoA is unknown, as is the substrates specificity of the RhoGAP domain. In this study, we solved the crystal structure of RhoA in complex with the RhoGAP domain of ARAP3. The structure of the complex presented a clear interface between the RhoGAP domain and RhoA. By analyzing the crystal structure and in combination with in vitro GTPase activity assays and isothermal titration calorimetry experiments, we identified the crucial residues affecting RhoGAP activity and substrates specificity among RhoA, Rac1 (Ras-related C3 botulinum toxin substrate 1), and Cdc42 (cell division control protein 42 homolog).


  • Organizational Affiliation

    From the Hefei National Laboratory for Physical Science at Microscale, Collaborative Innovation Center of Chemistry for Life Sciences and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, 230027, China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Arf-GAP with Rho-GAP domain, ANK repeat and PH domain-containing protein 3,Linker,Transforming protein RhoAA [auth B],
B [auth A]
419Homo sapienssynthetic constructMutation(s): 1 
Gene Names: ARAP3RHOA
UniProt & NIH Common Fund Data Resources
Find proteins for Q8WWN8 (Homo sapiens)
Explore Q8WWN8 
Go to UniProtKB:  Q8WWN8
PHAROS:  Q8WWN8
GTEx:  ENSG00000120318 
Find proteins for P61586 (Homo sapiens)
Explore P61586 
Go to UniProtKB:  P61586
PHAROS:  P61586
GTEx:  ENSG00000067560 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupsP61586Q8WWN8
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.189 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 56.786α = 90
b = 93.208β = 90
c = 164.283γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data scaling
PHASERphasing
PDB_EXTRACTdata extraction
HKL-2000data reduction

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-06-22
    Type: Initial release
  • Version 1.1: 2016-08-17
    Changes: Database references
  • Version 1.2: 2023-11-08
    Changes: Data collection, Database references, Derived calculations, Refinement description