Transcription factor (PubMed:34499028). Positively modulates neuronal levels of the ubiquitous Ca2+ sensor calmodulin/cmd-1, probably by direct binding to the cmd-1 promoter, thereby regulating Ca2+ signaling, physiology, and behavior (PubMed:34499028). May interact with calmodulin. Expressed broadly in the nervous system. May negatively modulate calmodulin/cmd-1 expression via a negative feedback loop in which the IQ domains bind to calmodulin. Belongs to the CAMTA family.