Complex sentence: SUMO1/sentrin/SMT3 specific peptidase 3, also known as SENP3, is a human gene that, together with SENP5, belongs to the Ulp1 branch in yeast and localize to nucleolus through B23/NPM1.
Split into simpler sentences: SUMO1/sentrin/SMT3 specific peptidase 3, also known as SENP3, is a protein which in humans is encoded by the "SENP3" gene. SENP3 together with SENP5, belongs to the Ulp1 branch in yeast and localize to nucleolus through B23/NPM1.