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Befani, O. et al.

Serum amine oxidase can specifically recognize and oxidize aminohexyl (AH) chains on AH-Sepharose support: single-step affinity immobilization.

Preparative affinity chromatography of bovine serum amine oxidase ( SAO) on aminohexyl (AH)-Sepharose was often associated with an unexpected irreversible SAO retention on the support. This particular enzyme immobilization, occurring without coupling reagents, was supposed to be due to a SAO ability to: (i) recognize alkylamine groups of the support as macro-molecularized substrate; (ii) catalyse their oxidation to the corresponding aldehydes, with release of NH3 and H2O2; and (iii) be immobilized on the activated support by a coupling between the nascent aldehyde groups and SAO free amine groups. This affinity immobilization procedure, with the self-activation of the support, being mild, allows by simple incubation for 24 h, the enzyme immobilization with the retention of 80% from original specific activity of free SAO. Immobilized SAO on AH-Sepharose microcolumns, viewed as a continuous flow-system reactor, was able to catalyse benzylamine oxidation for several weeks.[1]

References

Serum amine oxidase can specifically recognize and oxidize aminohexyl (AH) chains on AH-Sepharose support: single-step affinity immobilization. Befani, O., Graziani, M.T., Agostinelli, E., Grippa, E., Mondovì, B., Mateescu, M.A. Biotechnol. Appl. Biochem. (1998) [Pubmed]

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