6GNY

Crystal structure of the MAJIN-TERB2 heterotetrameric complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.188 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural basis of meiotic telomere attachment to the nuclear envelope by MAJIN-TERB2-TERB1.

Milburn, A.E.Gurusaran, M.da Cruz, I.Sen, L.T.Benavente, R.Davies, O.R.Dunce, J.M.

(2018) Nat Commun 9: 5355-5355

  • DOI: 10.1038/s41467-018-07794-7
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Meiotic chromosomes undergo rapid prophase movements, which are thought to facilitate the formation of inter-homologue recombination intermediates that underlie synapsis, crossing over and segregation. The meiotic telomere complex (MAJIN, TERB1, TERB ...

    Meiotic chromosomes undergo rapid prophase movements, which are thought to facilitate the formation of inter-homologue recombination intermediates that underlie synapsis, crossing over and segregation. The meiotic telomere complex (MAJIN, TERB1, TERB2) tethers telomere ends to the nuclear envelope and transmits cytoskeletal forces via the LINC complex to drive these rapid movements. Here, we report the molecular architecture of the meiotic telomere complex through the crystal structure of MAJIN-TERB2, together with light and X-ray scattering studies of wider complexes. The MAJIN-TERB2 2:2 hetero-tetramer binds strongly to DNA and is tethered through long flexible linkers to the inner nuclear membrane and two TRF1-binding 1:1 TERB2-TERB1 complexes. Our complementary structured illumination microscopy studies and biochemical findings reveal a telomere attachment mechanism in which MAJIN-TERB2-TERB1 recruits telomere-bound TRF1, which is then displaced during pachytene, allowing MAJIN-TERB2-TERB1 to bind telomeric DNA and form a mature attachment plate.


    Organizational Affiliation

    Institute for Cell and Molecular Biosciences, Faculty of Medical Sciences, Newcastle University, Framlington Place, Newcastle upon Tyne, NE2 4HH, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Membrane-anchored junction protein
A, C
108Homo sapiensMutation(s): 0 
Gene Names: MAJIN (C11orf85)
Find proteins for Q3KP22 (Homo sapiens)
Go to Gene View: MAJIN
Go to UniProtKB:  Q3KP22
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Telomere repeats-binding bouquet formation protein 2
B, D
43Homo sapiensMutation(s): 0 
Gene Names: TERB2 (C15orf43)
Find proteins for Q8NHR7 (Homo sapiens)
Go to Gene View: TERB2
Go to UniProtKB:  Q8NHR7
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
TRS
Query on TRS

Download SDF File 
Download CCD File 
B
2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL
TRIS BUFFER
C4 H12 N O3
LENZDBCJOHFCAS-UHFFFAOYSA-O
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.188 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 59.970α = 90.00
b = 88.390β = 90.00
c = 111.670γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
XSCALEdata scaling
PHENIXrefinement
PHENIXmodel building
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Wellcome TrustUnited Kingdom104158/Z/14/Z
Royal SocietyUnited KingdomRG170118

Revision History 

  • Version 1.0: 2018-12-12
    Type: Initial release
  • Version 1.1: 2019-01-02
    Type: Data collection, Database references