[5][6][7] This gene product is a member of the serine-arginine (SR) family of proteins, which is involved in constitutive and regulated RNA splicing.

Members of this family are characterized by N-terminal RNP1 and RNP2 motifs, which are required for binding to RNA, and multiple C-terminal SR/RS repeats, which are important in mediating association with other cellular proteins.

This protein can influence splice site selection of adenovirus E1A pre-mRNA.

Alternative splicing of this gene results in at least two transcript variants encoding different isoforms.

In addition, transcript variants utilizing alternative polyA sites exist.