4PLM image
Entry Detail
PDB ID:
4PLM
Keywords:
Title:
Crystal Structure of Chicken Netrin-1 (LN-LE3)
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2014-05-18
Release Date:
2014-06-18
Method Details:
Experimental Method:
Resolution:
2.80 Å
R-Value Free:
0.25
R-Value Work:
0.19
R-Value Observed:
0.19
Space Group:
P 32 2 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Netrin-1
Chain IDs:A
Chain Length:432
Number of Molecules:1
Biological Source:Gallus gallus
Primary Citation
Neural migration. Structures of netrin-1 bound to two receptors provide insight into its axon guidance mechanism.
Science 344 1275 1279 (2014)
PMID: 24876346 DOI: 10.1126/science.1255149

Abstact

Netrins are secreted proteins that regulate axon guidance and neuronal migration. Deleted in colorectal cancer (DCC) is a well-established netrin-1 receptor mediating attractive responses. We provide evidence that its close relative neogenin is also a functional netrin-1 receptor that acts with DCC to mediate guidance in vivo. We determined the structures of a functional netrin-1 region, alone and in complexes with neogenin or DCC. Netrin-1 has a rigid elongated structure containing two receptor-binding sites at opposite ends through which it brings together receptor molecules. The ligand/receptor complexes reveal two distinct architectures: a 2:2 heterotetramer and a continuous ligand/receptor assembly. The differences result from different lengths of the linker connecting receptor domains fibronectin type III domain 4 (FN4) and FN5, which differs among DCC and neogenin splice variants, providing a basis for diverse signaling outcomes.

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