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 

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

  • 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 ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Disks large homolog 1, MAGUK p55 subfamily member 7, Protein lin-7 homolog C
A
254Homo sapiensMutation(s): 0 
Gene Names: DLG1, LIN7C (MALS3, VELI3), MPP7
Find proteins for Q12959 (Homo sapiens)
Go to Gene View: DLG1
Go to UniProtKB:  Q12959
Find proteins for Q9NUP9 (Homo sapiens)
Go to Gene View: LIN7C
Go to UniProtKB:  Q9NUP9
Find proteins for Q5T2T1 (Homo sapiens)
Go to Gene View: MPP7
Go to UniProtKB:  Q5T2T1
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.95 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.255 
  • Space Group: P 62 2 2
Unit Cell:
Length (Å)Angle (°)
a = 153.190α = 90.00
b = 153.190β = 90.00
c = 58.903γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data scaling
HKL-2000data collection
HKL-2000data reduction
SHELXSphasing
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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