Catalog number: SBB-PS0001, 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 a quenched Rhodamine110 dye. Hydrolysis of the conjugate results in fluorescence observable by excitation at 485nm and emission at 535nm. Typical working range is 50-500nM.