3W6R

Crystal structure of the GAP domain of human MgcRacGAP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.223 

Starting Model: experimental
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This is version 1.1 of the entry. See complete history


Literature

Crystal structure of GTPase-activating domain from human MgcRacGAP.

Matsuura, A.Lee, H.H.

(2013) Biochem Biophys Res Commun 435: 367-372

  • DOI: https://doi.org/10.1016/j.bbrc.2013.04.094
  • Primary Citation of Related Structures:  
    3W6R

  • PubMed Abstract: 

    Cytokinesis in animal cells relies on a centralspindlin complex consisting of male germ cell RacGap (MgcRacGAP) and mitotic kinesin-like protein 1 (MKLP1). Rho GTPases act as molecular switches to regulate the actin cytoskeleton for cytokinesis, of which Rac1 is regulated by MgcRacGAP. In this study, we determined the crystal structure of the GTPase-activating protein (GAP) domain of MgcRacGAP at a resolution of 1.9Å. The conformation of Arg385, which is a key residue for GAP activity, was found to be different from that of previously reported GAP proteins, and MgcRacGAP (residues 348-546) was found to exist as a monomer in solution, according to Stokes radii. We also measured the GAP activity of MgcRacGAP mutants for Rac1.


  • Organizational Affiliation

    Department of Bio & Nano Chemistry, Kookmin University, Seoul 136-702, Republic of Korea.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Rac GTPase-activating protein 1202Homo sapiensMutation(s): 0 
Gene Names: RACGAP1KIAA1478MGCRACGAP
UniProt & NIH Common Fund Data Resources
Find proteins for Q9H0H5 (Homo sapiens)
Explore Q9H0H5 
Go to UniProtKB:  Q9H0H5
PHAROS:  Q9H0H5
GTEx:  ENSG00000161800 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9H0H5
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.223 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 41.466α = 90
b = 63.159β = 90
c = 74.078γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-02-26
    Type: Initial release
  • Version 1.1: 2023-11-08
    Changes: Data collection, Database references, Refinement description