Immunogen sequence: SDRITRFLTE FQDKQIKDWK KRFIGIRMRT ITPSLVDELK ASNPDFPEVS SGIYVQEVAP NSPSQRGGIQ DGDIIVKVNG RPLVDSSELQ EAVLTESPLL LEVRRGNDDL LFSIAPEVVM. HtrA3 belongs to the human high-temperature requirement factor A (HtrA) family. It is also called pre