May be involved in cooperative interactions with calmodulins or calmodulin-like proteins (By similarity). Recruits calmodulin proteins to microtubules, thus being a potential scaffold in cellular signaling and trafficking (By similarity). May associate with nucleic acids and regulate gene expression at the transcriptional or post-transcriptional level (By similarity). Binds to multiple calmodulin (CaM) in the presence of Ca(2+) and CaM-like proteins. Recruits calmodulin (CaM2) at the nucleus. Belongs to the IQD family.