NRIF (nuclear receptor-interacting factor) is a DNA binding protein that is essential for p75-mediated apoptosis in retina and sympathetic neurons. Neurotrophin or proneurotrophin binding to p75TR induces nuclear translocation of NRIF, which involves gamma-secretase cleavage of p75NTR ICD (Intra Cellular Domain). Once in the nucleus, NRIF mediates apoptosis, probably by acting as transcription factor.
Nykjaer, A, Petersen, CM, Willnow, TE
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