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Science. 2004 Jul 2;305(5680):103-6.

Inhibition of netrin-mediated axon attraction by a receptor protein tyrosine phosphatase.

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  • 1Department of Biological Sciences, Howard Hughes Medical Institute (HHMI), Stanford University, Stanford, CA 94305, USA.

Abstract

During axon guidance, the ventral guidance of the Caenorhabditis elegans anterior ventral microtubule axon is controlled by two cues, the UNC-6/netrin attractant recognized by the UNC-40/DCC receptor and the SLT-1/slit repellent recognized by the SAX-3/robo receptor. We show here that loss-of-function mutations in clr-1 enhance netrin-dependent attraction, suppressing ventral guidance defects in slt-1 mutants. clr-1 encodes a transmembrane receptor protein tyrosine phosphatase (RPTP) that functions in AVM to inhibit signaling through the DCC family receptor UNC-40 and its effector, UNC-34/enabled. The known effects of other RPTPs in axon guidance could result from modulation of guidance receptors like UNC-40/DCC.

PMID:
15232111
[PubMed - indexed for MEDLINE]
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