May play a role in regulating the structure of the neuronal region, called the active zone, from which synaptic vesicles send neurotransmitter signals across the synapse (PubMed:10517634, PubMed:19290026). This may be in association with the liprin-beta protein hlb-1 (PubMed:19290026). Presynaptic region. Detected in vulval muscle and other cells near the vulva; in neurons located in the lateral ganglion, posterior ganglion, ventral cord and lateral body; and in pharyngeal and body wall muscle cells. Belongs to the liprin family. Liprin-alpha subfamily.