Catalog number: SBB-PS0043, 50 μgThis product consists of a full-length, mature ubiquitin polypeptide (amino acids 1-76) recombinantly expressed in E.coli, conjugated on its c-terminus to AMC. Hydrolysis of the conjugate results in fluorescence observable by excitation at 345nm and emission at 445nm. Typical working range is 50-500nM.