The role of protein assembly in dynamically tunable bio-optical tissues.
Biomaterials
; 31(5): 793-801, 2010 Feb.
Article
em En
| MEDLINE
| ID: mdl-19906421
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 [2-5]. 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.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Proteínas
/
Cor
/
Loligo
Tipo de estudo:
Prognostic_studies
Limite:
Animals
Idioma:
En
Revista:
Biomaterials
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
Estados Unidos