Protein trap insertion line.
Fim protein knock-down by using slmbαTub67C.vhhGFP4 in a FimCPTI100066 homozygous background results in assembly of a stable hexagonal network that does not change conformation over time, resulting in a significant delay of actomyosin ring formation and slower constriction kinetics than controls. On STED super-resolution microscopy, actin fiber fail to form a ring, remaining locked in a stable hexagonal array; the thickness of these actin fibers appears similar to controls.
Df(3R)Exel6218 homozygous embryos display increased/premature actomyosin constriction during cellularization as well as defective ventral furrow invagination during gastrulation, both of which are partially suppressed by the depletion of Fim protein by using slmbαTub67C.vhhGFP4 in a FimCPTI100066 homozygous background.