InterPro domain: IPR025461

This family of proteins is found in bacteria and plants. It includes abscisic acid (ABA)-deficient 4 protein (ABA4) from Arabidopsis thaliana, which has a role in neoxanthin synthesis [ 1 ] and may be important for the de novo ABA synthesis specifically during dehydration [ 2 ].

1. The Arabidopsis ABA-deficient mutant aba4 demonstrates that the major route for stress-induced ABA accumulation is via neoxanthin isomers. Plant J. 50, 810-24