Enables enzyme binding activity. Involved in regulation of postsynaptic membrane neurotransmitter receptor levels. Located in central region of growth cone and cytosol. Part of kinesin complex. Is active in glutamatergic synapse. Orthologous to human YWHAE (tyrosine 3-monooxygenase/tryptophan 5-monooxygenase activation protein epsilon). [provided by Alliance of Genome Resources, Apr 2022]