Serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit gamma isoform

Definition:

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. The PP2A-PPP2R5C holoenzyme may specifically dephosphorylate and activate TP53 and play a role in DNA damage-induced inhibition of cell proliferation. PP2A-PPP2R5C may also regulate the ERK signaling pathway through ERK dephosphorylation.

References:

[1]. Heng-Hong Li, et al. A specific PP2A regulatory subunit, B56gamma, mediates DNA damage-induced dephosphorylation of p53 at Thr55. EMBO J. 2007 Jan 24;26(2):402-11. [Content Brief]

[2]. Claire Letourneux, et al. B56-containing PP2A dephosphorylate ERK and their activity is controlled by the early gene IEX-1 and ERK. EMBO J. 2006 Feb 22;25(4):727-38. [Content Brief]

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