EZ-Link™ Maleimide-PEG11-Biotin - FAQs

What is the advantage of using EZ-Link HPDP-Biotin over maleimide- or iodoacetyl-containing biotinylation reagents?

Both maleimide- and iodoacetyl-containing biotinylation reagents react with sulfhydryl (-SH) groups to form stable thioether bonds that are not cleavable. EZ-Link HPDP-Biotin on the other hand is a pyridyldithiol-biotin compound that reacts with -SH groups in near-neutral buffers to form reversible disulfide bonds. Because the disulfide group can be cleaved using DTT or other reducing agents, HPDP-Biotin is useful for labeling and affinity-purification applications that require recovery of the original, unmodified molecule.

Find additional tips, troubleshooting help, and resources within our Protein Purification and Isolation Support Center.