Immunogen sequence: VTVVQETQKK GHKLTDSEDE FPEITEEMEK EIKNVFRNGN QDEVLSEAFR LTITRKDIQT LNHLNWLNDE IINFYMNMLM ERSKEKGLPS VHAFNTFFFT KL. SENP1 is a protease that catalyzes two essential functions in the SUMO pathway: processing of full-length SUMO1, SUMO2 a