Product Specification Application: For use in deubiquitinylating enzyme assays and linear polyubiquitin binding studies. Purity: ≥90% (SDS-PAGE) Formulation: Liquid. In 50mM TRIS, pH 8.0, containing 50mM sodium chloride. Concentration: 1mg/ml, except Ub4 and Ub6 which are supplied at 0.5mg/ml Use/Stability: Stable for at least 12 months after receipt when stored at -20°C. Handling: Avoid freeze/thaw cycles. After opening, prepare aliquots and store at -20°C. Short Term Storage: -20°C Long Term Storage: -20°C