3THF

Crystal structure of the SD2 domain from Drosophila Shroom


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.228 
  • R-Value Observed: 0.232 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structure of Shroom domain 2 reveals a three-segmented coiled-coil required for dimerization, Rock binding, and apical constriction.

Mohan, S.Rizaldy, R.Das, D.Bauer, R.J.Heroux, A.Trakselis, M.A.Hildebrand, J.D.VanDemark, A.P.

(2012) Mol Biol Cell 23: 2131-2142

  • DOI: 10.1091/mbc.E11-11-0937
  • Primary Citation of Related Structures:  
    3THF

  • PubMed Abstract: 
  • Shroom (Shrm) proteins are essential regulators of cell shape and tissue morpho-logy during animal development that function by interacting directly with the coiled-coil region of Rho kinase (Rock). The Shrm-Rock interaction is sufficient to direct Rock subcellular localization and the subsequent assembly of contractile actomyosin networks in defined subcellular locales ...

    Shroom (Shrm) proteins are essential regulators of cell shape and tissue morpho-logy during animal development that function by interacting directly with the coiled-coil region of Rho kinase (Rock). The Shrm-Rock interaction is sufficient to direct Rock subcellular localization and the subsequent assembly of contractile actomyosin networks in defined subcellular locales. However, it is unclear how the Shrm-Rock interaction is regulated at the molecular level. To begin investigating this issue, we present the structure of Shrm domain 2 (SD2), which mediates the interaction with Rock and is required for Shrm function. SD2 is a unique three-segmented dimer with internal symmetry, and we identify conserved residues on the surface and within the dimerization interface that are required for the Rock-Shrm interaction and Shrm activity in vivo. We further show that these residues are critical in both vertebrate and invertebrate Shroom proteins, indicating that the Shrm-Rock signaling module has been functionally and molecularly conserved. The structure and biochemical analysis of Shrm SD2 indicate that it is distinct from other Rock activators such as RhoA and establishes a new paradigm for the Rock-mediated assembly of contractile actomyosin networks.


    Organizational Affiliation

    Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA 15260, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Protein ShroomA, B190Drosophila melanogasterMutation(s): 0 
Gene Names: CG34379ShroomShrm
UniProt
Find proteins for A1Z9P3 (Drosophila melanogaster)
Explore A1Z9P3 
Go to UniProtKB:  A1Z9P3
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.228 
  • R-Value Observed: 0.232 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 72.797α = 90
b = 85.632β = 90
c = 92.977γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
SHELXphasing
REFMACrefinement
PDB_EXTRACTdata extraction
CBASSdata collection
SHELXDphasing
PHENIXrefinement

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-06-06
    Type: Initial release
  • Version 1.1: 2012-06-13
    Changes: Database references