The series of molecular signals initiated by binding of the cysteine knot protein Norrin to a Frizzled 4 (Fzd4) family receptor on the surface of the target cell and ending with a change in cell state. [GOC:BHF, GOC:rl, PMID:15035989, PMID:17955262]
Full description or abstract
Collection
M5: Ontology GO: Gene Ontology GO:BP: GO Biological Process