5Z8X image
Deposition Date 2018-02-01
Release Date 2018-10-10
Last Version Date 2024-11-13
Entry Detail
PDB ID:
5Z8X
Keywords:
Title:
Crystal structure of human LRRTM2
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Host Organism:
Method Details:
Experimental Method:
Resolution:
3.15 Å
R-Value Free:
0.23
R-Value Work:
0.20
R-Value Observed:
0.20
Space Group:
C 2 2 21
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:Leucine-rich repeat transmembrane neuronal protein 2
Gene (Uniprot):LRRTM2
Mutations:T59L
Chain IDs:A, B, C, D
Chain Length:346
Number of Molecules:4
Biological Source:Homo sapiens
Ligand Molecules
Primary Citation
Structural insights into modulation and selectivity of transsynaptic neurexin-LRRTM interaction.
Nat Commun 9 3964 3964 (2018)
PMID: 30262834 DOI: 10.1038/s41467-018-06333-8

Abstact

Leucine-rich repeat transmembrane neuronal proteins (LRRTMs) function as postsynaptic organizers that induce excitatory synapses. Neurexins (Nrxns) and heparan sulfate proteoglycans have been identified as presynaptic ligands for LRRTMs. Specifically, LRRTM1 and LRRTM2 bind to the Nrxn splice variant lacking an insert at the splice site 4 (S4). Here, we report the crystal structure of the Nrxn1β-LRRTM2 complex at 3.4 Å resolution. The Nrxn1β-LRRTM2 interface involves Ca2+-mediated interactions and overlaps with the Nrxn-neuroligin interface. Together with structure-based mutational analyses at the molecular and cellular levels, the present structural analysis unveils the mechanism of selective binding between Nrxn and LRRTM1/2 and its modulation by the S4 insertion of Nrxn.

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Primary Citation of related structures