Endogenous sli is replaced with a cleavable form of sli that is tagged with a 2xTag:MYC-Tag:M(CD8-Unk)-2xTag:V5 cassette at the C terminus. This results in the encoded protein being membrane-bound (due to Tag:M(CD8-Unk)).
sliTM embryos exhibit longitudinal axon defects with innermost and medial bundles fasciculate and repeatedly cross the midline, forming axon circles resembling roundabouts.