5A6C

Concomitant binding of Afadin to LGN and F-actin directs planar spindle orientation


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.901 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.206 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Concomitant Binding of Afadin to Lgn and F-Actin Directs Planar Spindle Orientation.

Carminati, M.Gallini, S.Pirovano, L.Alfieri, A.Bisi, S.Mapelli, M.

(2016) Nat.Struct.Mol.Biol. 23: 155

  • DOI: 10.1038/nsmb.3152

  • PubMed Abstract: 
  • Polarized epithelia form by oriented cell divisions in which the mitotic spindle aligns parallel to the epithelial plane. To orient the mitotic spindle, cortical cues trigger the recruitment of NuMA-dynein-based motors, which pull on astral microtubu ...

    Polarized epithelia form by oriented cell divisions in which the mitotic spindle aligns parallel to the epithelial plane. To orient the mitotic spindle, cortical cues trigger the recruitment of NuMA-dynein-based motors, which pull on astral microtubules via the protein LGN. We demonstrate that the junctional protein Afadin is required for spindle orientation and correct epithelial morphogenesis of Caco-2 cysts. Molecularly, Afadin binds directly and concomitantly to F-actin and to LGN. We determined the crystallographic structure of human Afadin in complex with LGN and show that it resembles the LGN-NuMA complex. In mitosis, Afadin is necessary for cortical accumulation of LGN and NuMA above the spindle poles, in an F-actin-dependent manner. Collectively, our results depict Afadin as a molecular hub governing the enrichment of LGN and NuMA at the cortex. To our knowledge, Afadin is the first-described mechanical anchor between dynein and cortical F-actin.


    Organizational Affiliation

    Department of Experimental Oncology, European Institute of Oncology, Milan, Italy.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
G-PROTEIN-SIGNALING MODULATOR 2, AFADIN
A, B
374Homo sapiensMutation(s): 0 
Gene Names: GPSM2 (LGN), AFDN (AF6, MLLT4)
Find proteins for P81274 (Homo sapiens)
Go to Gene View: GPSM2
Go to UniProtKB:  P81274
Find proteins for P55196 (Homo sapiens)
Go to Gene View: AFDN
Go to UniProtKB:  P55196
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.901 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.206 
  • Space Group: P 21 3
Unit Cell:
Length (Å)Angle (°)
a = 169.880α = 90.00
b = 169.880β = 90.00
c = 169.880γ = 90.00
Software Package:
Software NamePurpose
SCALAdata scaling
XDSdata reduction
PHENIXrefinement
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-12-30
    Type: Initial release
  • Version 1.1: 2016-01-20
    Type: Database references
  • Version 1.2: 2016-01-27
    Type: Structure summary
  • Version 1.3: 2016-03-02
    Type: Database references