SRPK2

SRPK2 is a serine/threonine kinase of the CMGC group that specifically phosphorylates serine residues within the arginine/serine-rich (RS) domains of SR splicing factors. By controlling nuclear import and modulating the activity of SRSF proteins, it couples cytoplasmic signaling to the regulation of alternative pre-mRNA splicing. SRPK2 is broadly expressed with particularly high levels in the nervous system, and it influences cell-cycle progression, apoptosis and neuronal gene-expression programs. Aberrant SRPK2 signaling has been linked to tumor growth and to altered splicing of angiogenic transcripts, making the kinase a target of interest for small-molecule inhibitor research in oncology.