Non-essential component of the Ras signaling pathway. No apparent phenotype. Double mutant cnk-1 and lin-45 and double mutant cnk-1 and ksr-1 show high lethality in the first larval stage, filling with fluid and with a rod-like appearance due to loss of the excretory duct. Double mutant cnk-1 and lin-45 also shows P12 to P11 cell fate transformations. Belongs to the CNKSR family.