Immunogen sequence: LLGYPVPYTF HLNQGDDNCL ALTPLRVFTA RISWLLGQPP ILLYSFSVPE SLFPGLRDIL NTWEKDLRTR FRTQNDFADL Highest antigen sequence identity to the following orthologs: Mouse - 79%, Rat - 76%. C1orf74, also known as URCL4, is located on chromosome 1q32.