SRp75 is an alias for the gene, Serine/arginine-rich splicing factor 4, in humans. Other names include: SRP001LB; Splicing factor, arginine/serine-rich 4; Pre-mRNA-splicing factor SRP75; SR splicing factor 4; SFRS4; SRP75. The encoded protein has an amino acid length of 494 and a mass of 56.7 kDa. Other isoforms may exist. SRp75 is a member of the Splicing factor SR family. This gene shares homology with other species, including: Mouse, Rat, Zebrafish, Frog.