NGFI-B alpha/Nur77/NR4A1: Proteins and Enzymes

Nak1 is a member of the steroid/thyroid hormone receptor superfamily. The gene for Nak-1 is induced rapidly by androgens/growth factors and may have functions related to cell proliferation, differentiation and apoptosis (1). Liu et al (2) have demonstrated that mouse nur77 is necessary for induced apoptosis in T-cell hybridomas and can also be induced during early mitogenesis. Nak1 is a phosphoprotein and its size ranges from 67 kD to 88 kD, depending on post-translational modifications.