85-4027-22　Poly-L-lysine Hydrobromide, MW 52kD 25mg　CAS No:25988-63-0　288342

特徴

• Poly-L-lysine hydrobromide is a positively charged synthetic polyamino acid having one HBr per lysine unit. It is a crystalline solid soluble in water. Applications for poly-L-lysine hydrobromide include the promotion of cell adhesion to solid substrates for culture dishes or slides, the conjugation to active molecules for improved activities, the layer-by-layer deposition techniques, and the complexation with nucleic acids for gene expression.
• For cell culture applications, poly-L-lysine hydrobromide with a molecular weight greater than 30,000 Da is recommended. The poly-L-lysine hydrobromide (MW=52,000 Da) is easier to use because it is less viscous in solution; however, the poly-L-lysine hydrobromide with an higher molecular weight (MW=84,000 Da) has more attachement sites per polymer chain available to the cells.
• Poly-L-lysine hydrobromide has been purified by dialysis, sterile-filtered on 0.2um, lyophilized, and stored under Ar.
• Molecular Weight:52kD
• Appearance:White to off-white solid
• Identity (NMR):Conforms to structure
• PDI (GPC):1.0-1.2
• MN (NMR, DLS, Viscosity):47,000-57,500
• DPn (NMR, DLS, Viscosity):225-275
• Solubility:50mg/ml Water, clear solution
• Storage and Stability:Store by flushing with argon and protecting from light, and below -20°C.