TgAtg8–TgAtg3 interaction occurs in Toxoplasma gondii.
The TgAtg8 can bind directly TgAtg3 in vitro.
There is higher affinity between TgAtg8 and TgAtg3.
TgAtg8 possesses the conserved structure to interact with other TgAtg containing AIM.
TgAtg3 contains core E2 enzymatic activity structure and a truncated handle region.