Send to

Choose Destination
See comment in PubMed Commons below
Neuron. 2009 Sep 10;63(5):614-27. doi: 10.1016/j.neuron.2009.07.031.

LIG family receptor tyrosine kinase-associated proteins modulate growth factor signals during neural development.

Author information

The Solomon H. Snyder Department of Neuroscience, The Howard Hughes Medical Institute, The Johns Hopkins University School of Medicine, 725 North Wolfe Street, PCTB 1015, Baltimore, MD 21205, USA.


Genome-wide screens were performed to identify transmembrane proteins that mediate axonal growth, guidance and target field innervation of somatosensory neurons. One gene, Linx (alias Islr2), encoding a leucine-rich repeat and immunoglobulin (LIG) family protein, is expressed in a subset of developing sensory and motor neurons. Domain and genomic structures of Linx and other LIG family members suggest that they are evolutionarily related to Trk receptor tyrosine kinases (RTKs). Several LIGs, including Linx, are expressed in subsets of somatosensory and motor neurons, and select members interact with TrkA and Ret RTKs. Moreover, axonal projection defects in mice harboring a null mutation in Linx resemble those in mice lacking Ngf, TrkA, and Ret. In addition, Linx modulates NGF-TrkA- and GDNF-GFRalpha1/Ret-mediated axonal extension in cultured sensory and motor neurons, respectively. These findings show that LIGs physically interact with RTKs and modulate their activities to control axonal extension, guidance and branching.

[Indexed for MEDLINE]
Free PMC Article

Publication types, MeSH terms, Substances, Grant support

PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science Icon for PubMed Central
    Loading ...
    Support Center