Video 1. Visualization of sogD_ΔOpa transcriptional activities in a representative early embryo from nc12 to gastrulation using MS2-MCP in vivo imaging.
Expression normally extends until gastrulation for the wildtype reporter (Koromila and Stathopoulos, 2019) but upon mutation of five Opa-binding sites expression is extinguished by nc14C. Stills from the movie are shown in Figure 1C.