Binds to the ABA-responsive element (ABRE). Mediates stress-responsive ABA signaling. DNA-binding heterodimer (By similarity). Interacts with ABI3 and the AFP proteins AFP1, AFP2, AFP3 and AFP4. Expressed in roots and flowers. Up-regulated by drought, salt, abscisic acid (ABA). Defective in ABA and stress responses. May be due to intron retention. Belongs to the bZIP family. ABI5 subfamily. Was originally thought to correspond to two different genes At4g34000 and At4g34010. Was originally thought to correspond to two different genes At4g34000 and At4g34010. Was originally thought to correspond to two different genes At4g34000 and At4g34010. Was originally thought to correspond to two different genes At4g34000 and At4g34010. Was originally thought to correspond to two different genes At4g34000 and At4g34010.