Nε-(N-(+)-Biotinyl-6-aminohexanoyl)-Nα,Nα-bis(carboxymethyl)-L-lysine (Biotin-X-NTA) is used as a hetero-bifunctional linker between histone(His)-tagged proteins and (strept)avidin conjugates.
BIOTIN-X NITRILOTRIACETIC ACID, TRIPOTASSIUM SALT Supplier