3LRA

Structural Basis for Assembling a Human Tripartite Complex Dlg1-MPP7-Mals3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.95 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.255 
  • R-Value Observed: 0.255 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural basis for tandem L27 domain-mediated polymerization

Yang, X.Xie, X.Chen, L.Zhou, H.Wang, Z.Zhao, W.Tian, R.Zhang, R.Tian, C.Long, J.Shen, Y.

(2010) FASEB J 24: 4806-4815

  • DOI: 10.1096/fj.10-163857
  • Primary Citation of Related Structures:  
    3LRA

  • PubMed Abstract: 
  • The establishment of epithelial cell polarity requires the assembly of multiprotein complexes and is crucial during epithelial morphogenesis. Three scaffolding proteins, Dlg1, MPP7, and Mals3, can be assembled to form a complex that functions in the establishment and maintenance of apicobasal polarity in epithelial tissues through their L27 domains ...

    The establishment of epithelial cell polarity requires the assembly of multiprotein complexes and is crucial during epithelial morphogenesis. Three scaffolding proteins, Dlg1, MPP7, and Mals3, can be assembled to form a complex that functions in the establishment and maintenance of apicobasal polarity in epithelial tissues through their L27 domains. Here we report the crystal structure of a 4-L27-domain complex derived from the human tripartite complex Dlg1-MPP7-Mals3 in combination with paramagnetic relaxation enhancement measurements. The heterotrimer consists of 2 pairs of heterodimeric L27 domains. These 2 dimers are asymmetric due to the large difference between the N- and C-terminal tandem L27 domain of MPP7. Structural analysis combined with biochemical experiments further reveals that the loop αA-αB and helix αB of the C-terminal L27 domain of MPP7 play a critical role in assembling the entire tripartite complex, suggesting a synergistic tandem L27-mediated assembling event.


    Organizational Affiliation

    Tianjin Key Laboratory of Protein Science, College of Life Science, Nankai University, Tianjin, China.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Disks large homolog 1, MAGUK p55 subfamily member 7, Protein lin-7 homolog CA254Homo sapiensMutation(s): 0 
Gene Names: L27 domains of Dlg1MPP7 and Mals3
Find proteins for Q5T2T1 (Homo sapiens)
Explore Q5T2T1 
Go to UniProtKB:  Q5T2T1
NIH Common Fund Data Resources
PHAROS:  Q5T2T1
Find proteins for Q9NUP9 (Homo sapiens)
Explore Q9NUP9 
Go to UniProtKB:  Q9NUP9
NIH Common Fund Data Resources
PHAROS:  Q9NUP9
Find proteins for Q12959 (Homo sapiens)
Explore Q12959 
Go to UniProtKB:  Q12959
NIH Common Fund Data Resources
PHAROS:  Q12959
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.95 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.255 
  • R-Value Observed: 0.255 
  • Space Group: P 62 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 153.19α = 90
b = 153.19β = 90
c = 58.903γ = 120
Software Package:
Software NamePurpose
HKL-2000data collection
SHELXSphasing
CNSrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-11-17
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2017-06-28
    Changes: Source and taxonomy