Nuclear hormone receptor. Binds estrogens with an affinity similar to that of ESR1ESR1/ER-alpha, and activates expression of reporter genes containing estrogen response elements (ERE) in an estrogen-dependent manner. Binds DNA as a homodimer. Can form a heterodimer with ESR1. Interacts with NCOA1, NCOA3, NCOA5 and NCOA6 coactivators, leading to a strong increase of transcription of target genes. Interacts with UBE1C and AKAP13. Interacts with DNTTIP2. Interacts with CCDC62 in the presence of estradiol/E2; this interaction seems to enhance the transcription of target genes. Interacts with DNAAF4. Interacts with PRMT2. Interacts with CCAR2 (via N-terminus) in a ligand-independent manner. Interacts with RBM39, in the presence of estradiol (E2). Present in granulosa cells of antral follicles in various stages of follicular growth. Composed of three domains: a modulating N-terminal domain, a DNA-binding domain and a C-terminal ligand-binding domain. Phosphorylation at Ser-84 and Ser-102 recruits NCOA1. Belongs to the nuclear hormone receptor family. NR3 subfamily. Truncated N-terminus.