This family consists of several hypothetical mammalian steroid receptor RNA activator proteins. SRA-RNAs likely to encode stable proteins are widely expressed in breast cancer cell lines. SRA-RNA is a steroid receptor co-activator which acts as a functional RNA and is classified as belonging to the growing family of functional non-coding RNAs.

1: Identification of new human coding steroid receptor RNA activator isoforms. Emberley E, Huang GJ, Hamedani MK, Czosnek A, Ali D, Grolla A, Lu B, Watson PH, Murphy LC, Leygue E; Biochem Biophys Res Commun 2003;301:509-515. PMID:12565891