ATB' BETA (Arabidopsis thaliana serine/threonine protein phosphatase 2A 55 kDa regulatory subunit B prime beta); protein phosphatase type 2A regulator. Identical to Serine/threonine protein phosphatase 2A 57 kDa regulatory subunit B' beta isoform (B'BETA) [Arabidopsis Thaliana] (GB:O04376); similar to ATB' ALPHA (PP2A, B' subunit, alpha isoform), protein phosphatase type 2A regulator [Arabidopsis thaliana] (TAIR:AT5G03470.1); similar to hypothetical protein [Vitis vinifera] (GB:CAN81062.1); similar to unnamed protein product [Vitis vinifera] (GB:CAO68892.1); similar to predicted protein [Physcomitrella patens subsp. patens] (GB:EDQ67290.1);