Orphan nuclear receptor. May act concomitantly with NURR1 in regulating the expression of delayed-early genes during liver regeneration. Binds the NGFI-B response element (NBRE) 5'-AAAAGGTCA-3' (By similarity). May inhibit NF-kappa-B transactivation of IL2. Participates in energy homeostasis by sequestrating the kinase STK11 in the nucleus, thereby attenuating cytoplasmic AMPK activation. Plays a role in the vascular response to injury (By similarity). Binds DNA as a monomer (By similarity). Interacts with GADD45GIP1 (PubMed:15459248). Interacts with STK11 (PubMed:22983157). Interacts with IFI27 (PubMed:22427340). Heterodimer (via DNA-binding domain) with RXRA (via C-terminus); DNA-binding of the heterodimer is enhanced by 9-cis retinoic acid (PubMed:17761950, PubMed:15509776). Competes for the RXRA interaction with EP300 and thereby attenuates EP300 mediated acetylation of RXRA (PubMed:17761950). Nuclear export to the cytoplasm is XPO1-mediated and positively regulated by IFI27 (PubMed:22427340). Translocation to the mitochondrion upon interaction with RXRA and upon the presence of 9-cis retinoic acid (PubMed:17761950). Fetal muscle and adult liver, brain and thyroid. By growth-stimulating agents. Phosphorylated at Ser-351 by RPS6KA1 and RPS6KA3 in response to mitogenic or stress stimuli. Acetylated by p300/CBP, acetylation increases stability. Deacetylated by HDAC1. Belongs to the nuclear hormone receptor family. NR4 subfamily.