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Letter

Nature Cell Biology 8, 1415–1423 (1 December 2006) | doi:10.1038/ncb1510

Numb is a suppressor of Hedgehog signalling and targets Gli1 for Itch-dependent ubiquitination

Lucia Di Marcotullio , Elisabetta Ferretti , Azzura Greco , Enrico De Smaele , Agnese Po , Maria Anna Sico , Maurizio Alimandi , Giuseppe Giannini , Marella Maroder , Isabella Screpanti & Alberto Gulino

The developmental protein Numb is a major determinant of binary cell fates. It is also required for the differentiation of cerebellar granule cell progenitors (GCPs) at a stage of development responsive to the morphogenic glycoprotein Hedehog.