Table 1.

Nomenclature of subunits of PP2A and the subcellular distribution.

Subunit	Gene name	Gene locus	Isoforms	Aliases	Subcellular distribution	References
A	PPP2R1A	19q13.14	Aα	PR65α	Cytoplasm	[1, 25, 54, 55]
	PPP2R1B	11q23.1	Aβ	PR65β	Cytoplasm	[1, 13, 25, 54]
B	PPP2R2A	8p21.1	Bα	PR55α, B55α	Cytoplasm, microtubules, neurofilaments, vimentin, membrane, nucleus, Golgi/reticulum	[1, 25, 54]
	PPP2R2B	5q32	Bβ	PR55β, B55β	Cytosol	[1, 25, 54, 56]
	PPP2R2C	4p16.1	Bγ	PR55γ, B55γ	Cytoskeletal fraction	[1, 25, 54, 57]
	PPP2R2D	10q26.3	Bδ	PR55δ, B55δ	Cytosol	[1, 25, 54]
B′	PPP2R5A	1q32.3	B′α	PR61α, B56α	Cytoplasm	[1, 25, 54]
	PPP2R5B	11q13.1	B′β	PR61β1, B56β, PR61β2	Cytoplasm	[1, 25, 54, 58]
	PPP2R5C	14q32.31	B′γ1 B′γ2 B′γ3	PR61γ1, B56γ1, B′α3 PR61γ2, B56γ2, B′α2 B56γ3, B′α1	Cytoplasm, nucleus, focal adhesion	[1, 25, 54]
	PPP2R5D	6p21.1	B′δ	PR61δ, B56δ	Cytosol, mitochondria, nucleus, microsomes	[1, 25, 54]
	PPP2R5E	14q23.2	B′ε	PR61ε, B56ε	Cytoplasm	[1, 25, 54]
B′′	PPP2R3A	3q22.1	B′′α1 B′′α2	PR130 PR72	Centrosome and Golgi Cytosol	[1, 25, 54, 59]
	PPP2R3B	Xp22.33	B′′β1 B′′β2	PR48 PR59	Nucleus	[1, 25, 54]
	PPP2R3C		B′′γ	G5PR	Nucleus	[1, 25, 54]
B′′′	STRN	2p22.2		PR110, PR93	Membrane and cytoplasm	[1, 25, 54]
	STRN3	14q12		PR112, PR102,PR94	nucleus	[1, 25, 54]
C	PPP2CA	5q31.1	Cα	PP2Aα	Cytoplasm and nucleus	[1, 25, 54]
	PPP2CB	8p12	Cβ	PP2Aβ	Cytoplasm and nucleus	[1, 25, 54, 60]