Immunogen sequence: EETSTCIATP DVEKKEDLPT SSETFGLHVE NVPKMVFPQP ESTLSNKRKN NQGNSFQAKR ARLNKITGLL ASKAVGVDGA EKKEDYNETA Highest antigen sequence identity to the following orthologs: Mouse - 83%, Rat - 82%. The exact function of PHF20L1 remains unknown.