Function
Possesses E3 ubiquitin-protein ligase activity in vitro when associated with the E2 enzyme UBC8 in vitro (PubMed:21969385, PubMed:28626006). Plays combinatory roles with AIRP1 in the positive regulation of the abscisic acid-mediated drought stress response (PubMed:21969385). Plays a positive role in abscisic acid- and high salinity-regulated seed germination through the ubiquitin-proteasome-dependent down-regulation of ATP1/SDIRIP1 (PubMed:28626006).