Serine/Threonine-Protein Phosphatase 2A 55 Kda Regulatory Subunit B Beta Isoform (PPP2R2B) Reagents

Serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B beta isoform

The B regulatory subunit might modulate substrate selectivity and catalytic activity, and also might direct the localization of the catalytic enzyme to a particular subcellular compartment. Within the PP2A holoenzyme complex, isoform 2 is required to promote proapoptotic activity. Isoform 2 regulates neuronal survival through the mitochondrial fission and fusion balance.

Spinocerebellar ataxia 12 (SCA12)

[Isoform 1]: Cytoplasm. Cytoplasm, cytoskeleton. Membrane.; [Isoform 2]: Cytoplasm. Mitochondrion. Mitochondrion outer membrane.

Phosphatase 2A regulatory subunit B family

Brain.

Neuroscience

2ABB_HUMAN; B55 beta; Beta isoform of regulatory subunit B55 protein phosphatase 2; MGC24888; PP2A B55beta; PP2A PR55B; PP2A subunit B B beta isoform; PP2A subunit B B55 beta isoform; PP2A subunit B isoform B55 beta; PP2A subunit B isoform B55-beta; PP2A subunit B isoform beta; PP2A subunit B isoform PR55 beta; PP2A subunit B isoform PR55-beta; PP2A subunit B isoform R2 beta; PP2A subunit B isoform R2-beta; PP2A subunit B PR55 beta isoform; PP2A subunit B R2 beta isoform; Ppp2r2b; PR2AB beta; PR2AB55 beta; PR2APR55 beta; PR52B; PR55 beta; Protein phosphatase 2 (formerly 2A) regulatory subunit B (PR 52) beta isoform; Protein phosphatase 2 (formerly 2A) regulatory subunit B beta isoform; Protein phosphatase 2 regulatory subunit B; Protein phosphatase 2 regulatory subunit B beta isoform; SCA 12; SCA12; Serine/threonine protein phosphatase 2A 55 kDa regulatory subunit B beta isoform; Serine/threonine protein phosphatase 2A neuronal isoform; Serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B beta isoform

The product of this gene belongs to the phosphatase 2 regulatory subunit B family. Protein phosphatase 2 is one of the four major Ser/Thr phosphatases, and it is implicated in the negative control of cell growth and division. It consists of a common heteromeric core enzyme, which is composed of a catalytic subunit and a constant regulatory subunit, that associates with a variety of regulatory subunits. The B regulatory subunit might modulate substrate selectivity and catalytic activity. This gene encodes a beta isoform of the regulatory subunit B55 subfamily. Defects in this gene cause autosomal dominant spinocerebellar ataxia 12 (SCA12), a disease caused by degeneration of the cerebellum, sometimes involving the brainstem and spinal cord, and in resulting in poor coordination of speech and body movements. Multiple alternatively spliced variants, which encode different isoforms, have been identified for this gene. The 5' UTR of some of these variants includes a CAG trinucleotide repeat sequence (7-28 copies) that can be expanded to 55-78 copies in cases of SCA12.