Surfaces Coated with Polymer Brushes Work as Carriers for Histidine Ammonia Lyase

Abstract: The immobilization of enzymes on solid supports is an important challenge in biotechnology and biomedicine. In contrast to other methods, enzyme deposition in polymer brushes offers the benefit of high protein loading that preserves enzymatic activity in part due to the hydrated 3D environment that is available within the brush structure. The authors equipped planar and colloidal silica surfaces with poly (2‐(diethylamino) ethyl methacrylate)‐based brushes to immobilize Thermoplasma acidophilum histidine ammonia lyase, and analyzed the amount and activity of the immobilized enzyme. The poly (2‐(diethylamino) ethyl methacrylate) brushes are attached to the solid silica supports either via a “grafting‐to” or a “grafting‐from” method. It is found that the grafting‐from method results in higher amounts of deposited polymer and, consequently, higher amounts of Thermoplasma acidophilum histidine ammonia lyase. All polymer brush‐modified surfaces show preserved catalytic activity of the deposited Thermoplasma acidophilum histidine ammonia lyase. However, immobilizing the enzyme in polymer brushes using the grafting‐from method resulted in twice the enzymatic activity from the grafting‐to approach, illustrating a successful enzyme deposition on a solid support.

Object Details

• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch

References and Relationships

• Bibliographic citation: Surfaces Coated with Polymer Brushes Work as Carriers for Histidine Ammonia Lyase ; day:14 ; month:04 ; year:2023 ; extent:12 ; Macromolecular bioscience ; (14.04.2023) (gesamt 12)

Contributors, Places and Time

• Creator: Marcelino, Thaís ; Docampo, Miguel A. Ramos ; Qian, Xiaomin ; Ade, Carina ; Brodszkij, Edit ; Ceccato, Marcel ; Foss, Morten ; Dulchavsky, Mark ; Bardwell, James C. A. ; Städler, Brigitte

Further information

• DOI: 10.1002/mabi.202200528
• URN: urn:nbn:de:101:1-2023041515360458807406
• Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Last update: 14.08.2025, 10:53 AM CEST