Enables dynein light chain binding activity and transcription corepressor binding activity. Involved in presynaptic active zone assembly; regulation of ubiquitin protein ligase activity; and retrograde axonal transport. Located in several cellular components, including axon cytoplasm; cytoplasmic vesicle; and cytoskeleton of presynaptic active zone. Is extrinsic component of membrane. Is active in several cellular components, including GABA-ergic synapse; hippocampal mossy fiber to CA3 synapse; and presynaptic active zone cytoplasmic component. Colocalizes with synaptic membrane. Orthologous to human BSN (bassoon presynaptic cytomatrix protein). [provided by Alliance of Genome Resources, Apr 2022]