Immobilization of histidine-tagged proteins on electrodes
| Autor: | Jens Schrader, Klaus-Michael Mangold, Claudia Ley, Dirk Holtmann |
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| Rok vydání: | 2011 |
| Předmět: |
Immobilized enzyme
02 engineering and technology 010402 general chemistry 01 natural sciences Colloid and Surface Chemistry Affinity chromatography Protein purification Organic chemistry Histidine Physical and Theoretical Chemistry Electrodes chemistry.chemical_classification Conductive polymer Binding Sites Molecular Structure Biomolecule Proteins Surfaces and Interfaces General Medicine 021001 nanoscience & nanotechnology Combinatorial chemistry 0104 chemical sciences chemistry Electrode 0210 nano-technology Biosensor Biotechnology |
| Zdroj: | Colloids and Surfaces B: Biointerfaces |
| ISSN: | 1873-4367 |
| Popis: | The development of new enzyme immobilization techniques that do not affect catalytic activity or conformation of a protein is an important research task in biotechnology including biosensor applications and heterogeneous reaction systems. One of the most promising approaches for controlled protein immobilization is based on the immobilized metal ion affinity chromatography (IMAC) principle originally developed for protein purification. Here we describe the current status and future perspectives of immobilization of His-tagged proteins on electrode surfaces. Recombinant proteins comprising histidine-tags or histidine rich native proteins have a strong affinity to transition metal ions. For metal ion immobilization at the electrode surface different matrices can be used such as self-assembled monolayers or conductive polymers. This specific technique allows a reversible immobilization of histidine-tagged proteins at electrodes in a defined orientation which is an important prerequisite for efficient electron transfer between the electrode and the biomolecule. Any application requiring immobilized biocatalysts on electrodes can make use of this immobilization approach, making future biosensors and biocatalytic technologies more sensitive, simpler, reusable and less expensive while only requiring mild enzyme modifications. |
| Databáze: | OpenAIRE |
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