Biotin-Poly(L-Lysine), MW 3.3K
- Structure: Cationic polyamino acid composed of L-lysine repeating units, functionalized with a terminal biotin group, usually supplied as HCl salt.
- Key Properties: Water-soluble, positively charged polymer with abundant primary amines on side chains.
- Core Function: Biotin enables strong and specific binding to avidin/streptavidin; PLL backbone facilitates electrostatic interaction with negatively charged molecules.
- Applications: Protein immobilization, biosensing, gene delivery, cell labeling, and surface functionalization.
- Storage: Store at −20 °C, dry and protected from light.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.