Single-stranded DNA-binding protein that preferentially binds to the sterol regulatory element (SRE) sequence 5′-GTGCGGTG-3′, and thereby mediates transcriptional repression (PubMed:2562787). Has a role as transactivator of the Myc promoter (By similarity). Binds single-stranded RNA in a sequence-specific manner (By similarity). ; [Isoform 1]: Binds G-rich elements in target mRNA coding sequences (PubMed:28329689). Prevents G-quadruplex structure formation in vitro, suggesting a role in supporting translation by resolving stable structures on mRNAs (PubMed:28329689). ; [Isoform 2]: Binds to RNA. ; [Isoform 4]: Binds to RNA. ; [Isoform 5]: Binds to RNA. ; [Isoform 6]: Binds to RNA. ; [Isoform 8]: Binds to RNA.
