SERINE/THREONINE PROTEIN PHOSPHATASE 2A, 56 KDA REGULATORY SUBUNIT, BETA ISOFORM (PP2A, B SUBUNIT, B BETA ISOFORM) (PP2A, B SUBUNIT, B56 BETA ISOFORM) (PP2A, B SUBUNIT, PR61 BETA ISOFORM) (PP2A, B SUBUNIT, R5 BETA ISOFORM). [Source:SWISSPROT;Acc:Q15173]