1VF6

2.1 Angstrom crystal structure of the PALS-1-L27N and PATJ L27 heterodimer complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.242 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structural basis for L27 domain-mediated assembly of signaling and cell polarity complexes.

Li, Y.Karnak, D.Demeler, B.Margolis, B.Lavie, A.

(2004) Embo J. 23: 2723-2733

  • DOI: 10.1038/sj.emboj.7600294

  • PubMed Abstract: 
  • L27 is a protein-binding domain that can assemble essential proteins for signaling and cell polarity into complexes by interacting in a heterodimeric manner. One of these protein complexes is the PATJ/PALS1/Crumbs tripartite complex, which is crucial ...

    L27 is a protein-binding domain that can assemble essential proteins for signaling and cell polarity into complexes by interacting in a heterodimeric manner. One of these protein complexes is the PATJ/PALS1/Crumbs tripartite complex, which is crucial for the establishment and maintenance of cell polarity. To reveal the structural basis underlining the obligate heterodimerization, we have determined the crystal structure of the PALS1-L27N/PATJ-L27 heterodimer complex. Each L27 domain is composed of three helices. The two L27 domains heterodimerize by building a compact structure consisting of a four-helix bundle formed by the first two helices of each L27 domain and one coiled-coil formed by the third helix of each domain. The large hydrophobic packing interactions contributed by all the helices of both L27 domains predominantly drive the heterodimer formation, which is likely to be a general feature of L27 domains. Combined with mutational studies, we can begin to understand the structural basis for the specificity of L27 binding pairs. Our results provide unique insights into L27 domain heterodimer complex, which is critical for cell polarization.


    Organizational Affiliation

    Department of Biochemistry and Molecular Genetics, University of Illinois, Chicago, IL 60607, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PALS1-associated tight junction protein
A, B
83Homo sapiensMutation(s): 0 
Gene Names: PATJ (INADL)
Find proteins for Q8NI35 (Homo sapiens)
Go to Gene View: PATJ
Go to UniProtKB:  Q8NI35
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
MAGUK p55 subfamily member 5
C, D
72Mus musculusMutation(s): 0 
Gene Names: Mpp5 (Pals1)
Find proteins for Q9JLB2 (Mus musculus)
Go to UniProtKB:  Q9JLB2
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.242 
  • Space Group: H 3 2
Unit Cell:
Length (Å)Angle (°)
a = 111.060α = 90.00
b = 111.060β = 90.00
c = 193.690γ = 120.00
Software Package:
Software NamePurpose
CNSrefinement
XDSdata scaling
HKL-2000data reduction
HKL-2000data collection
XDSdata reduction
SOLVEphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-04-20
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2016-12-07
    Type: Other