SRSF3 encodes the human gene, Serine/arginine-rich splicing factor 3. It may also be known as: Splicing factor, arginine/serine-rich 3; Pre-mRNA-splicing factor SRP20; SFRS3; SRp20. The encoded protein has an amino acid length of 164 and a mass of 19.3 kDa. SRSF3 is a member of the Splicing factor SR family. Homologs of this gene exist in other organisms, including: Frog.