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Fig. 7. Hypothesis for the function of Kette during the second myoblast fusion step
compared with the known function of Kette during axonal outgrowth. We propose
that the function of Dock/NCK, which mediates Kette function during
neurogenesis (Bogdan and Klämbt,
2003), is taken over by Crk, which has also been shown to interact
with Blow and Mbc, and to be involved in Rac1 activation and the formation of
lamellipodia (see text for details).