Issue 10, 2021

Engineering of biofilms with a glycosylation circuit for biomaterial applications

Abstract

Glycosylation is a crucial post-translational modification for a wide range of functionalities. Adhesive protein-based biomaterials in nature rely on heavily glycosylated proteins such as spider silk and mussel adhesive proteins. Engineering protein-based biomaterials genetically enables desired functions and characteristics. Additionally, utilization of glycosylation for biomaterial engineering can expand possibilities by including saccharides to the inventory of building blocks. Here, de novo glycosylation of Bacillus subtilis amyloid-like biofilm protein TasA using a Campylobacter jejuni glycosylation circuit is proposed to be a novel biomaterial engineering method for increasing adhesiveness of TasA fibrils. A C. jejuni glycosylation motif is genetically incorporated to tasA gene and expressed in Escherichia coli containing the C. jejuni pgl protein glycosylation pathway. Glycosylated TasA fibrils indicate enhanced adsorption on the gold surface without disruption of fibril formation. Our findings suggest that N-linked glycosylation can be a promising tool for engineering protein-based biomaterials specifically regarding adhesion.

Graphical abstract: Engineering of biofilms with a glycosylation circuit for biomaterial applications

Supplementary files

Article information

Article type
Paper
Submitted
25 12 2020
Accepted
14 2 2021
First published
19 2 2021

Biomater. Sci., 2021,9, 3650-3661

Engineering of biofilms with a glycosylation circuit for biomaterial applications

E. Sahin Kehribar, M. E. Isilak, E. U. Bozkurt, J. Adamcik, R. Mezzenga and U. O. S. Seker, Biomater. Sci., 2021, 9, 3650 DOI: 10.1039/D0BM02192J

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