Hetero-bifunctional cross-linking reagents have activated esters and maleimide reactive groups. These functional groups react with amines and sulfhydryl groups of proteins, respectively. Enzyme-labeled haptens are prepared using hetero-bifunctional cross-linking reagents such as EMCS or GMBS. The cross-linking reaction requires neutral pH and mild temperature since it is necessary to maintain enzyme activity and antibody titers in the cross-linking reaction. Heterobifunctional cross-linking reagents with 3, 5, 7, or 10 linear carbon chains are available. These linear aliphatic chains act as spacers between the two reactive sites and their water-soluble reagents. They are more stable than the aromatic cross-linking reagents such as succinimidyl-4-N-maleimidobenzoate in a wider pH range.
Conjugation of Macromolecules with Hetero-Bifunctional Cross-Linking Reagent
|Product Name||Code||Length (Å)|
2) P. S. R. Anjaneyulu, James V. Staros, Reactions of N-Hydroxysulfosuccinimide Active Esters, Int. J. Peptide Protein Res., 1987, 30, 117.
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