Immunogen sequence: PGVLHCTTKF CDYGKAPGAE EYAQQDVLKK SYSKAFTLTI SALFVTPKTT GARVELSEQQ LQLWPSDVDK LSPTDNLPRG SRAHITL. CNP may participate in RNA metabolism in the myelinating cell, CNP is the third most abundant protein in central nervous system myelin.