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SDS | USER MANUAL |
Glyoxyl agarose has been frequently used for multipoint covalent attachment of protein (including antibody and enzyme) and is particularly suited for enzyme immobilization when the stability of the immobilized enzyme is a concern (Selected review ref.: Zucca P. et. al. Molecules 2016, 21, 1577).
CellMosaic designed this kit to work directly with glyoxyl agarose. Glyoxyl groups are aliphatic aldehyde groups with low steric hindrance towards the immobilization reaction and high stability at alkaline pH. Glyoxyl reacts with the amino group, forming Schiff’s base (imino bond). The imino bond is not very stable and can be reversible, so only proteins that form several imino bonds will be able to stay. For this reason, glyoxyl agarose permits the immobilization of the protein through the area with the highest density of lysine groups, where the highest likelihood of multipoint covalent attachment may be achieved. This multiple covalent attachment also allows appropriate alignment of the protein on the surface. After immobilization, the double bond of the Schiff’s base is finally reduced to form a stable secondary amino bond. The remaining aldehyde groups are converted into inert hydroxyl groups. However, protein such as antibody containing disulfide bridges or enzyme bearing a metal ion in the active center may be affected by the final reducing step and should be used cautiously with this method.
Scale of the reaction: 5 mL
Key Features of this Immobilization Kit:
Specification of the Solid Support
Specification of the Immobilized Product
Requirement for protein (including antibody and enzyme)