Binds to the consensus sequence 5'-AGAGTG-3' and has transcriptional activator activity (By similarity). May have a tumor- suppressor function. May play a role in apoptosis. {ECO:0000250, ECO:0000269|PubMed:11526492}. This is the function of CSRNP1 (cysteine and serine rich nuclear protein 1, ENSG00000144655).