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The role of protein assembly in dynamically tunable bio-optical tissues ☆

Paper ID Volume ID Publish Year Pages File Format Full-Text
9900 653 2010 9 PDF Available
Title
The role of protein assembly in dynamically tunable bio-optical tissues ☆
Abstract

Cephalopods are nicknamed the “masters of disguise” for their highly evolved camouflage mechanisms, including the hallmark ability to rapidly change the color and reflectance of their skin. Previously, reflectin proteins were identified as the major biomaterial component of iridosomes [1], specialized light-reflecting architectures that contribute intense structural color to squid skin, eyes, and organs [2], [3], [4] and [5]. Supramolecular assembly of reflectin has been recognized as a key property in the protein's function [6]. Here, we report the first cloning and expression of a specific reflectin protein found in the responsive iridophore cells of the squid Loligo pealeii, which are unique in their ability to switch on/off and change color. We demonstrate that these iridophores can be chemically tuned to reflect the entire visible spectrum. By examining recombinant reflectin, we show that this dynamic optical function is facilitated by the hierarchical assembly of nanoscale protein particles that elicit large volume changes upon condensation. These findings provide insight into the design and synthesis of biomaterials for complex, responsive function in optical applications.

Keywords
Nanoparticle; Self Assembly; Protein; Biomimetic material; Structural Color; Lens
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The role of protein assembly in dynamically tunable bio-optical tissues ☆
Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 31, Issue 5, February 2010, Pages 793–801
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering