The ftz neurogenic control element drives expression of wild-type Ggal\Cam that is tagged at the N-terminal end with Tag:MT(Khc) to target the expressed protein to the growth cone when it is expressed in neurons. The expressed protein is expected to act as an inhibitor of Cam (and other Ca[2+]-binding proteins) by competing for available Ca[2+].
Defects in the formation of the longitudinal axon pathways. At stage 13-14 dMP2 and vMP2 axon extension stalls and axon guidance shows errors. At stage 16 MP1 pathway freely crosses the midline.