SRA1
Function
Functional RNA which acts as a transcriptional coactivator that selectively enhances steroid receptor-mediated transactivation ligand-independently through a mechanism involving the modulating N-terminal domain (AF-1) of steroid receptors. Also mediates transcriptional coactivation of steroid receptors ligand-dependently through the steroid-binding domain (AF-2). Enhances cellular proliferation and differentiation and promotes apoptosis in vivo. May play a role in tumorigenesis.
Sequence Similarities
Belongs to the SRA1 family.
Tissue Specificity
Highly expressed in liver and skeletal muscle and to a lesser extent in brain. Also expressed in both normal and tumorigenic breast epithelial cell lines. Significantly up-regulated in human tumors of the breast, ovary, and uterus.
Cellular localization
- Nucleus
- Cytoplasm
Alternative names
PP7684, SRA1, Steroid receptor RNA activator 1, Steroid receptor RNA activator protein, SRAP