Immunogen sequence: GHSDDESDSE GSDSESTSRE NNTHPEWSFT TVRKKPDPKK VQNGAEQDLV QTLSCLSMII TPAFAELKQQ DENNA. MST4 is member of the Ste20-like kinase family of serine/threonine kinases and is overexpressed during prostate cancer development. The product of thi