Immunogen sequence: LNSAPSPFNP QGQSQITDPR QAQSSPPWSY DQSYPSYLSQ MTSPSIHSTT PLSSTRGTGL PAITDVPRRI SGASELGPFS DPRQFPSISS LTESRFSNPR MHYPA. RUNX2, a nuclear protein, is a member of the RUNX family of transcription factors and has an Runt DNA-binding domain.