3.4.22.B75 truncated SUMO-2 whereas truncated SUMO-2 and -3 can substantially enhance SENP6 activity, neither truncated SUMO-1 nor truncated Nedd8 nor ubiquitin has this ability 714081 3.4.22.B75 truncated SUMO-3 whereas truncated SUMO-2 and -3 can substantially enhance SENP6 activity, neither truncated SUMO-1 nor truncated Nedd8 nor ubiquitin has this ability 714081