This is the conserved N-terminal domain of CReP, constitutive repressor of eIF2-alpha phosphorylation/protein phosphatase 1, catalytic subunit. It functions in the dephosphorylation of eIF2-alpha under basal conditions in the absence of stress. In response to translation inhibition, there is reduced synthesis of the labile CReP that contributes to elevated levels of eIF2-alpha phosphorylation. The C-terminus, family PP1c, is shared with the apoptosis-associated protein Gadd34 and herpes simplex virus.
Jiyao W et al.(2023). "The conserved domain database in 2023.",