Binds calmodulin in a calcium dependent manner. May function as scaffolding or signaling protein. Interacts with CTTNBP2; this interaction may regulate dendritic spine distribution of STRN4. Activation of glutamate receptors weakens the interaction with CTTNBP2 (By similarity). Interacts with CTTNBP2NL. CTTNBP2-binding may regulate dendritic spine distribution. The name 'Zinedin' probably originates from the name of the famous soccer player from Marseille (Zinedine Zidane). Belongs to the WD repeat striatin family.