Chemical Name: N-(6-Maleimidocaproyloxy)sulfosuccinimide, sodium salt
CAS: 103848-61-9 (free acid)
Appearance: White or slightly yellowish-pink powder
Purity: ≥90.0% (HPLC)
MW: 410.33, C14H15N2NaO9S
Storage Condition: 0-5oC
Shipping Condition: blue ice
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 because
it is necessary to maintain enzyme activity and antibody titers in the
cross-linking reaction. Hetero-bifunctional 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
1. J. V. Staros, N-Hydroxysulfosuccinimide Active Esters:Bis(N-hydroxysulfosuccinimide) Esters of Two Dicarboxylic acids Are Hydrophilic, Membraneimpermeant, Protein Cross-linkers, Biochemistry, 1982, 21, 3950.
2. P. S. R. Anjaneyulu, James V. Staros, Reactions of N-Hydroxysulfosuccinimide Active Esters, Int. J. Peptide Protein Res., 1987, 30, 117.
3. Y. Fukami, K. Sato, K. Ikeda, K. Kamisango, K. Koizumi and T. Matsuno, Evidence for Autoinhibitory Regulation of the c-src Gene Product a Possible Interaction Between the Src Homology 2 Domain and Autophosphorylation Site, J. Biol. Chem., 1993, 268, 1132.