Q-Link Maleimide Activated Horseradish Peroxidase - Q-Link Maleimide Activated Horseradish Peroxidase is designed for conjugating HRP with proteins, peptides, or other molecules containing a sulfhydryl group, including reduced cysteines. This maleimide activated HRP has been prepared using our Superhydrophilic technology designed to improve solubility and stability of the HRP conjugate in solution.