CCDC- 55::GFP is broadly expressed in larvae and adults. The
ccdc-55 message is transcribed as part of a multi-gene operon, CEOP3156, with the predicted promoter 5' of
rnf-121. It is likely the expression pattern seen in the
rnf-121::GFP animals is relevant for
ccdc-55, this includes muscle, seam, hypodermis, vulva and somatic gonad with prominent expression in the DTC. In C. elegans, genes contained in operons can also be expressed independently (Blumenthal and Gleason, 2003), so the rnf- 121-based expression pattern may not completely recapitulate the endogenous expression of
ccdc-55.