. "Reviewed: D'Eustachio, P, Matthews, L, Gillespie, ME, 2008-12-02 16:25:31"^^ . "Edited: May, B, 2009-06-02 00:51:49"^^ . "Authored: May, B, 2009-06-02 00:51:49"^^ . "Reviewed: Urano, F, 2010-04-30"^^ . "The C-terminal domain of PERK has kinase activity when PERK homodimerizes. PERK kinase specifically phosphorylates Ser52 of eIF2-alpha, causing an arrest in translation. The result is that translation of ER-targeted proteins is halted on ribosomes in the vicinity of activated PERK. The general arrest of translation results in the loss of short-lived proteins such as Cyclin D1, causing an arrest of the cell cycle in G1."^^ . . . . . . . . . . . "Phosphorylation of eIF2-alpha by PERK"^^ . "2.7.11"^^ . . . . .