Catalog number: SBB-TR0014, 20 μgHighly purified recombinant protein site-specifically labeled with a single Europium Cryptate moiety. All lysines are available along with a fully functional C-terminus, making the Europium Cryptate Ub ideal for chain formation using the the E1 – E2 and E3 conjugation cascade. The Cryptate has an excitation maximum of 304nm and an emission maximum of 620nm. This protein was expressed in E.coli.