5GMI

Crystal Structure of GRASP55 GRASP domain in complex with JAM-C C-terminus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.71 Å
  • R-Value Free: 0.291 
  • R-Value Work: 0.256 
  • R-Value Observed: 0.259 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Genetic, structural, and chemical insights into the dual function of GRASP55 in germ cell Golgi remodeling and JAM-C polarized localization during spermatogenesis

Cartier-Michaud, A.Bailly, A.L.Betzi, S.Shi, X.Lissitzky, J.C.Zarubica, A.Serge, A.Roche, P.Lugari, A.Hamon, V.Bardin, F.Derviaux, C.Lembo, F.Audebert, S.Marchetto, S.Durand, B.Borg, J.P.Shi, N.Morelli, X.Aurrand-Lions, M.

(2017) PLoS Genet 13: e1006803-e1006803

  • DOI: 10.1371/journal.pgen.1006803
  • Primary Citation of Related Structures:  
    5GMJ, 5GMI

  • PubMed Abstract: 
  • Spermatogenesis is a dynamic process that is regulated by adhesive interactions between germ and Sertoli cells. Germ cells express the Junctional Adhesion Molecule-C (JAM-C, encoded by Jam3), which localizes to germ/Sertoli cell contacts. JAM-C is involved in germ cell polarity and acrosome formation ...

    Spermatogenesis is a dynamic process that is regulated by adhesive interactions between germ and Sertoli cells. Germ cells express the Junctional Adhesion Molecule-C (JAM-C, encoded by Jam3), which localizes to germ/Sertoli cell contacts. JAM-C is involved in germ cell polarity and acrosome formation. Using a proteomic approach, we demonstrated that JAM-C interacted with the Golgi reassembly stacking protein of 55 kDa (GRASP55, encoded by Gorasp2) in developing germ cells. Generation and study of Gorasp2-/- mice revealed that knock-out mice suffered from spermatogenesis defects. Acrosome formation and polarized localization of JAM-C in spermatids were altered in Gorasp2-/- mice. In addition, Golgi morphology of spermatocytes was disturbed in Gorasp2-/- mice. Crystal structures of GRASP55 in complex with JAM-C or JAM-B revealed that GRASP55 interacted via PDZ-mediated interactions with JAMs and induced a conformational change in GRASP55 with respect of its free conformation. An in silico pharmacophore approach identified a chemical compound called Graspin that inhibited PDZ-mediated interactions of GRASP55 with JAMs. Treatment of mice with Graspin hampered the polarized localization of JAM-C in spermatids, induced the premature release of spermatids and affected the Golgi morphology of meiotic spermatocytes.


    Organizational Affiliation

    Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Golgi reassembly-stacking protein 2A, B235Mus musculusMutation(s): 0 
Gene Names: Gorasp2GOLPH6
UniProt
Find proteins for Q99JX3 (Mus musculus)
Explore Q99JX3 
Go to UniProtKB:  Q99JX3
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Junctional adhesion molecule CC, D19Mus musculusMutation(s): 0 
Gene Names: Jam3
UniProt & NIH Common Fund Data Resources
Find proteins for Q9D8B7 (Mus musculus)
Explore Q9D8B7 
Go to UniProtKB:  Q9D8B7
IMPC:  MGI:1933825
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.71 Å
  • R-Value Free: 0.291 
  • R-Value Work: 0.256 
  • R-Value Observed: 0.259 
  • Space Group: I 41 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 132.492α = 90
b = 132.492β = 90
c = 220.706γ = 90
Software Package:
Software NamePurpose
xia2data scaling
PHASERphasing
PHENIXrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-05-24
    Type: Initial release
  • Version 1.1: 2017-07-05
    Changes: Database references