Part of a complex with dlc-1 and egal-1, which is recruited to the nuclear envelope by unc-83, where in turn, it recruits dynein to the nuclear surface and regulates nuclear migration in hypodermal precursor cells (PubMed:20005871) (Probable). Required for the formation of dendritic branches of PVD sensory neurons (PubMed:21205795). Component of a dynein-regulating complex composed of at least bicd-1, dlc-1 and egal-1. Interacts with egal-1 and unc-83. Probably recruited to the nuclear envelope by unc-83. Expressed in the excretory cell, body wall muscles, vulval muscle cells, PVD and FLP sensory neurons and AVF interneurons. Expressed during embryonic development. RNAi-mediated knockdown results in increased dendritic branch formation in PVD sensory neurons (PubMed:21205795). RNAi-mediated knockdown in a bicd-1 (ok949) mutant background results in failed nuclei migrations in larval hypodermal P-cells (PubMed:27697906). Belongs to the BicD family.