5LF2

Crystal structure of laminin beta2 LE5-LF-LE6


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.178 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystallographic analysis of the laminin beta 2 short arm reveals how the LF domain is inserted into a regular array of LE domains.

Pulido, D.Briggs, D.C.Hua, J.Hohenester, E.

(2017) Matrix Biol. 57-58: 204-212

  • DOI: 10.1016/j.matbio.2016.06.006

  • PubMed Abstract: 
  • Laminins are a major constituent of all basement membranes. The polymerisation of laminins at the cell surface is mediated by the three short arms of the cross-shaped laminin heterotrimer. The short arms contain repeats of laminin-type epidermal grow ...

    Laminins are a major constituent of all basement membranes. The polymerisation of laminins at the cell surface is mediated by the three short arms of the cross-shaped laminin heterotrimer. The short arms contain repeats of laminin-type epidermal growth factor-like (LE) domains, interspersed with globular domains of unknown function. A single LF domain is inserted between LE5 and LE6 of the laminin β1 and β2 chains. We report the crystal structure at 1.85Å resolution of the laminin β2 LE5-LF-LE6 region. The LF domain consists of a β-sandwich related to bacterial family 35 carbohydrate binding modules, and more distantly to the L4 domains present in the short arms of laminin α and γ chains. An α-helical region mediates the extensive interaction of the LF domain with LE5. The relative arrangement of LE5 and LE6 is very similar to that of consecutive LE domains in uninterrupted LE tandems. Fitting atomic models to a low-resolution structure of the first eight domains of the laminin β1 chain determined by small-angle X-ray scattering suggests a deviation from the regular LE array at the LE4-LE5 junction. These results advance our understanding of laminin structure.


    Organizational Affiliation

    Department of Life Sciences, Imperial College London, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Laminin subunit beta-2
A, B
315Rattus norvegicusMutation(s): 0 
Gene Names: Lamb2
Find proteins for P15800 (Rattus norvegicus)
Go to UniProtKB:  P15800
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
A, B
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
CA
Query on CA

Download SDF File 
Download CCD File 
A, B
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.178 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 144.320α = 90.00
b = 55.350β = 119.38
c = 111.340γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
xia2data reduction
Aimlessdata scaling
PHENIXphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Wellcome TrustUnited Kingdom101748/Z/13/Z

Revision History 

  • Version 1.0: 2016-07-27
    Type: Initial release
  • Version 1.1: 2017-03-08
    Type: Database references