5U4V

pseudoGTPase domain (pG1) of p190RhoGAP-B

  • Classification: HYDROLASE
  • Organism(s): Homo sapiens
  • Expression System: Escherichia coli BL21(DE3)
  • Mutation(s): No 

  • Deposited: 2016-12-06 Released: 2017-09-20 
  • Deposition Author(s): Stiegler, A.L., Boggon, T.J.
  • Funding Organization(s): National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS), National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS), National Institutes of Health/Office of the Director

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.244 
  • R-Value Observed: 0.246 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

p190RhoGAP proteins contain pseudoGTPase domains.

Stiegler, A.L., Boggon, T.J.

(2017) Nat Commun 8: 506-506

  • DOI: 10.1038/s41467-017-00483-x
  • Primary Citation of Related Structures:  
    5U4U, 5U4V

  • PubMed Abstract: 

    • The two p190RhoGAP proteins, p190RhoGAP-A and -B, are key regulators of Rho GTPase signaling and are essential for actin cytoskeletal structure and contractility. Here we report the discovery of two evolutionarily conserved GTPase-like domains located in the 'middle domain', previously thought to be unstructured ...

    The two p190RhoGAP proteins, p190RhoGAP-A and -B, are key regulators of Rho GTPase signaling and are essential for actin cytoskeletal structure and contractility. Here we report the discovery of two evolutionarily conserved GTPase-like domains located in the 'middle domain', previously thought to be unstructured. Deletion of these domains reduces RhoGAP activity. Crystal structures, MANT-GTPγS binding, thermal denaturation, biochemical assays and sequence homology analysis all strongly support defects in nucleotide-binding activity. Analysis of p190RhoGAP proteins therefore indicates the presence of two previously unidentified domains which represent an emerging group of pseudoenzymes, the pseudoGTPases.A growing number of 'pseudoenzymes' with a regulatory role in signal transduction processes but without catalytic activity are being identified. Here, the authors identify two pseudoGTPase domains in p190RhoGAP, characterize them biochemically and structurally and show that they influence RhoGAP activity.

    Organizational Affiliation: 

    Yale Cancer Center, Yale University School of Medicine, 333 Cedar Street, New Haven, CT, 06520, USA. titus.boggon@yale.edu.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Rho GTPase-activating protein 5A176Homo sapiensMutation(s): 0 
Gene Names: ARHGAP5, RHOGAP5
UniProt & NIH Common Fund Data Resources
Find proteins for Q13017 (Homo sapiens)
Explore Q13017 
Go to UniProtKB:  Q13017
PHAROS:  Q13017
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ13017
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.244 
  • R-Value Observed: 0.246 
  • Space Group: P 43
  • Diffraction Data DOI: 10.15785/SBGRID/455
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 40.763α = 90
b = 40.763β = 90
c = 95.214γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

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View more in-depth experimental data
Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)United StatesR01NS085078
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01GM109487
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01GM114621
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01GM102262
National Institutes of Health/Office of the DirectorUnited StatesS10OD018007
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01GM100411

Revision History  (Full details and data files)

  • Version 1.0: 2017-09-20
    Type: Initial release
  • Version 1.1: 2017-09-27
    Changes: Database references
  • Version 1.2: 2019-12-18
    Changes: Author supporting evidence