Immunogen sequence: PIIDQLAEEA RAFNRIYVAS VHQDLSDDDI KSVFEAFGKI KSCTLARDPT TGKHKGYGFI EYEKAQSSQD AVSSMNLFDL GG. PUF60 encodes a protein that is a Ro RNP-binding protein. It interacts with Ro RNPs and their interaction is thought to represent a gain of fu