qSi364 [3xFLAG::fbf-2(R7/R8 loop deletion) + unc-119(+)] IV. Single-copy MosSCI insertion into oxTi177 IV. R7/R8 loop deletion removes a critical protein-to-protein interface. qSi364 is phenotypically wild-type on its own, but Mog when crossed into fbf-1(ok91) fbf-2(q704) background. Reference: Carrick BH, et al. Dev Cell. 2024 Mar 11;59(5):661-675.e7. doi: 10.1016/j.devcel.2024.01.005. PMID: 38290520.