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NMDA receptor-regulated gene protein 2 C-terminus The transition of neuronal cells from pre-cursor to mature state is regulated by the N-methyl-d-aspartate (NMDA) receptor, a glutamate-gated ion channel that is permeable to Ca2+. NMDA receptors probably mediate this activity by permitting expression of NARG2. NARG2 is transiently expressed, being a regulatory protein that is present in the nucleus of dividing cells and then down-regulated as progenitors exit the cell cycle and begin to differentiate. NARG2 contains repeats of (S/T)PXX, (11 in mouse, six in human), a putative DNA-binding motif that is found in many gene-regulatory proteins including Kruppel, Hunchback and Antennapedi.
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