Product Specification Alternative Name:FrI Source:Isolated from HeLa S3 cell lysate. Formulation:Liquid. In 25mM HEPES, pH 7.6. Application:Useful in ubiquitinylation assays and in vitro conjugation experiments. Long Term Storage:-80°C Handling:Avoid freeze/thaw cycles. After opening, prepare aliquots and store at -80°C.