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Modular Architecture of Protein Binding Units for Designing Properties of Cellulose Nanomaterials
Author(s) -
Malho JaniMarkus,
Arola Suvi,
Laaksonen Päivi,
Szilvay Géza R.,
Ikkala Olli,
Linder Markus B.
Publication year - 2015
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201505980
Subject(s) - cellulose , materials science , modular design , nanomaterials , linker , nanotechnology , chemistry , computer science , organic chemistry , operating system
Molecular biomimetic models suggest that proteins in the soft matrix of nanocomposites have a multimodular architecture. Engineered proteins were used together with nanofibrillated cellulose (NFC) to show how this type of architecture leads to function. The proteins consist of two cellulose‐binding modules (CBM) separated by 12‐, 24‐, or 48‐mer linkers. Engineering the linkers has a considerable effects on the interaction between protein and NFC in both wet colloidal state and a dry film. The protein optionally incorporates a multimerizing hydrophobin (HFB) domain connected by another linker. The modular structure explains effects in the hydrated gel state, as well as the deformation of composite materials through stress distribution and crosslinking. Based on this work, strategies can be suggested for tuning the mechanical properties of materials through the coupling of protein modules and their interlinking architectures.