die-1 affects antisymmetry of AWC neurons. (A) Expression phenotypes of integrated transgenes of str-2prom∷GFP(kyIs140), str-2prom∷TagRFP (vyIs68), and srsx-3prom∷GFP (vyIs68). (OE) Overexpression. die-1fosmid∷yfp(OE) data in the sixth and seventh rows are combined from both vyEx1462 and vyEx1476, showing qualitatively similar results. (B,C) Only vyEx1462 was used in double-mutant analysis with unc-36(e251) and sek-1(ag1) and in mosaic analysis. Since the ceh-36 promoter is active in not only AWCL/R but also ASEL/R, we also examined and observed the expected ASER-to-ASEL transformation in ceh-36prom∷die-1 animals (vyEx1510, 1511) (Supplemental Fig. S3). (B) Expression of an integrated transgene of str-2prom∷GFP (kyIs140) in die-1(w34) animals with or without the extrachromosomal array die-1fosmid∷yfp; odr-1prom∷DsRed (vyEx1462) in total AWC cells. A Z-test was used to calculate P-values. (C) A subset of the data from B is presented here. Shown are only those animals in which die-1 activity is present in one, but not the other, AWC neuron (as assessed with the odr-1prom∷DsRed array marker), revealing again that die-1 activity correlates with the absence of str-2 expression. A Z-test was used to calculate P-values.