Matter‐tag: A universal immobilization platform for enzymes on polymers, metals, and silicon‐based materials

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Abstract

Enzyme immobilization is extensively studied to improve enzyme properties in catalysis and analytical applications. Here, we introduce a simple and versatile enzyme immobilization platform based on adhesion-promoting peptides, namely Matter-tags. Matter-tags immobilize enzymes in an oriented way as a dense monolayer. The immobilization platform was established with three adhesion-promoting peptides; Cecropin A (CecA), liquid chromatography peak I (LCI), and Tachystatin A2 (TA2), that were genetically fused to enhanced green fluorescent protein and to two industrially important enzymes: a phytase (from Yersinia mollaretii) and a cellulase (CelA2 from a metagenomic library). Here, we report a universal and simple Matter-tag-based immobilization platform for enzymes on various materials including polymers (polystyrene, polypropylene, and polyethylene terephthalate), metals (stainless steel and gold), and silicon-based materials (silicon wafer). The Matter-tag-based enzyme immobilization is performed at ambient temperature within minutes (D ) of 2.9·10-8 M and a maximal surface coverage of 504 ng/cm².

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