A novel rabconnectin‐3‐binding protein that directly binds a GDP/GTP exchange protein for Rab3A small G protein implicated in Ca2+‐dependent exocytosis of neurotransmitter

These results indicate that rabconnectin-3 consists of the alpha and beta subunits and binds directly Rab3 GEP through the beta subunit and indirectly Rab3 GAP through an unidentified molecule(s).