ABI1 (ABA INSENSITIVE 1); calcium ion binding / protein serine/threonine phosphatase. Identical to Protein phosphatase 2C ABI1 (ABI1) [Arabidopsis Thaliana] (GB:P49597;GB:Q43717;GB:Q94C87); similar to ABI2 (ABA INSENSITIVE 2), protein serine/threonine phosphatase [Arabidopsis thaliana] (TAIR:AT5G57050.1); similar to abscisic insensitive 1B [Populus tremula] (GB:CAM84256.1); similar to abscisic insensitive 1B [Populus tremula] (GB:CAM84273.1); similar to abscisic insensitive 1B [Populus tremula] (GB:CAM84258.1); contains InterPro domain Protein phosphatase 2C-related; (InterPro:IPR001932); contains InterPro domain Protein phosphatase 2C; (Int