Immobilization of γ-Glutamyl Transpeptidase from Equine Kidney for the Synthesis of kokumi Compounds
Articolo
Data di Pubblicazione:
2020
Citazione:
Immobilization of γ-Glutamyl Transpeptidase from Equine Kidney for the Synthesis of kokumi Compounds / M. Bruni, M.S. Robescu, D. Ubiali, G. Marrubini, R. Vanna, C. Morasso, I. Benucci, G. Speranza, T. Bavaro. - In: CHEMCATCHEM. - ISSN 1867-3880. - 12:1(2020 Jan 08), pp. 210-218. [10.1002/cctc.201901464]
Abstract:
γ-Glutamyl transpeptidase from equine kidney (ekGGT, E.C. 2.3.2.2) is an intrinsic membrane enzyme which transfers the γ-glutamyl moiety of glutathione to amino acids and peptides, thus producing γ-glutamyl derivatives. An immobilization study of ekGGT was carried out with the aim to develop a robust biocatalyst for the synthesis of γ-glutamyl amino acids which are known as kokumi compounds. Heterofunctional octyl-glyoxyl-agarose resulted in a high immobilization yield and activity recovery (93 % and 88 %, respectively). Immobilized ekGGT retained more than 95 % activity under reaction conditions (Tris-HCl, pH 9, 0.05 M) after 6 days, whereas the residual activity after 6 reaction cycles (18 days) was 85 %. The synthesis of γ-glutamylmethionine catalyzed by octyl-glyoxyl-agarose-ekGGT afforded the product in 42 % yield (101 mg). The immobilized ekGGT was characterized by Raman spectroscopy. The immobilization protocol developed for ekGGT could be of general applicability to membrane proteins.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
M. Bruni, M.S. Robescu, D. Ubiali, G. Marrubini, R. Vanna, C. Morasso, I. Benucci, G. Speranza, T. Bavaro
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