Skip to main content

Selective Functionalization of Microgels with Enzymes by Sortagging

مؤلف البحث
Zhi Zou, Elisabeth Gau, Islam El-Awaad, Felix Jakob, Andrij Pich, Ulrich Schwaneberg
قسم البحث
مجلة البحث
Bioconjugate Chemistry
الناشر
NULL
تصنيف البحث
1
عدد البحث
30(11)
موقع البحث
doi: 10.1021/acs.bioconjchem.9b00568
سنة البحث
2019
المشارك في البحث
ملخص البحث

Enzyme immobilization has been widely used to improve the stability and recyclability of enzymes in industrial processes. In this work, a sortase-mediated and therefore selective covalent immobilization strategy (sortagging) for enzymes on microgels (GelZyms) was investigated. Aqueous microgels were synthesized from poly(N-vinylcaprolactam)/glycidyl methacrylate (PVCL/GMA) and tagged with the sortase A recognition peptide sequence (LPETG) or its nucleophilic counterpart-tag (GGG). General applicability and selective immobilization were confirmed by subsequent sortagging of five different enzymes (Bacillus subtilis lipase A (BSLA), Yersinia mollaretii phytase (Ym-phytase), Escherichia coli copper efflux oxidase (CueO laccase), cellulase A2, and Bacillus megaterium monooxygenase P450 BM3). The latter was performed directly from the cell lysate to ensure cost-effective immobilization. All five immobilized enzymes were catalytically active and could be recycled (e.g., laccase CueO and monooxygenase P450 BM3 F87A; >55% residual activity after six cycles). Application potential was demonstrated by using CueO decorated microgels for bleaching of the synthetic dye indigo carmine.