Figure 2

Analysis of excretory cell expression-dependence on upstream octamers. We identified several genes that require the octamer for proper levels of EC-expression. A, A -135 bp 5'-truncation of ZC395.10's upstream region drives expression in the EC (EC) along with the rectal epithelia (RE) and intestine (I). B, A -105 bp 5'-truncation of ZC395.10's region can still drive expression in the intestine, but EC and rectal epithelial expression is lost. C, A -2,853 bp 5'-end C01B12.3 drives relatively strong EC expression. D, Truncating the C01B12.3 promoter to 879 bp upstream of the ATG leads to a drop in the EC expression level. E. A -589 bp 5'-truncation of C02B8.4's upstream region drives expression in the EC and the pharynx (P). Exposure times are indicated on the images.