Nuclear receptor coactivator that can enhance preferentially estrogen receptors ESR1 and ESR2 transactivation. Modulates also progesterone/PGR, glucocorticoid/NR3C1 and androgen/AR receptors transactivation, although at lower level; little effect on vitamin D receptor/VDR. Interacts with ESR1 and ESR2 in the presence of estradiol/E2. The interaction with ESR2 recruits CCDC62 to ER target genes, including cyclin-D1/CCND1 AP-1 promoter. Mainly nuclear. Highly expressed in adult testis. Expressed in both prostate epithelial and stromal cells, with predominant expression in epithelial cells (at protein level) (PubMed:19126643). Not detected in prostate by RT-PCR (PubMed:19165854). Overexpressed in various cancers. Contains 2 Leu-Xaa-Xaa-Leu-Leu (LXXLL) motifs. The first one is essential for the association with ESR1 and ESR2. Truncated N-terminus.