5U4U

pseudoGTPase domain (pG1) of p190RhoGAP-A

  • Classification: HYDROLASE
  • Organism(s): Xenopus laevis
  • 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: 1.90 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.183 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.3 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: https://doi.org/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. 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

    Department of Pharmacology, Yale University School of Medicine, 333 Cedar Street, New Haven, CT, 06520, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
MGC81300 protein178Xenopus laevisMutation(s): 0 
Gene Names: arhgap35MGC81300
UniProt
Find proteins for A0A1L8F832 (Xenopus laevis)
Explore A0A1L8F832 
Go to UniProtKB:  A0A1L8F832
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A1L8F832
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

Unit Cell:
Length ( Å )Angle ( ˚ )
a = 62.937α = 90
b = 62.937β = 90
c = 161.017γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data scaling
PHASERphasing
HKL-2000data reduction

Structure Validation

View Full Validation Report



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
  • Version 1.3: 2023-10-04
    Changes: Data collection, Database references, Refinement description