6FB3 image
Deposition Date 2017-12-18
Release Date 2018-03-28
Last Version Date 2024-11-06
Entry Detail
PDB ID:
6FB3
Keywords:
Title:
Teneurin 2 Partial Extracellular Domain
Biological Source:
Source Organism:
Gallus gallus (Taxon ID: 9031)
Host Organism:
Method Details:
Experimental Method:
Resolution:
2.38 Å
R-Value Free:
0.24
R-Value Work:
0.22
R-Value Observed:
0.22
Space Group:
P 1 21 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:Teneurin-2
Gene (Uniprot):TENM2
Chain IDs:A, B, C, D
Chain Length:1859
Number of Molecules:4
Biological Source:Gallus gallus
Ligand Molecules
Primary Citation
Structures of Teneurin adhesion receptors reveal an ancient fold for cell-cell interaction.
Nat Commun 9 1079 1079 (2018)
PMID: 29540701 DOI: 10.1038/s41467-018-03460-0

Abstact

Teneurins are ancient cell-cell adhesion receptors that are vital for brain development and synapse organisation. They originated in early metazoan evolution through a horizontal gene transfer event when a bacterial YD-repeat toxin fused to a eukaryotic receptor. We present X-ray crystallography and cryo-EM structures of two Teneurins, revealing a ~200 kDa extracellular super-fold in which eight sub-domains form an intricate structure centred on a spiralling YD-repeat shell. An alternatively spliced loop, which is implicated in homophilic Teneurin interaction and specificity, is exposed and thus poised for interaction. The N-terminal side of the shell is 'plugged' via a fibronectin-plug domain combination, which defines a new class of YD proteins. Unexpectedly, we find that these proteins are widespread amongst modern bacteria, suggesting early metazoan receptor evolution from a distinct class of proteins, which today includes both bacterial proteins and eukaryotic Teneurins.

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Primary Citation of related structures