期刊
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
卷 23, 期 24, 页码 -出版社
MDPI
DOI: 10.3390/ijms232415679
关键词
reflectin; origin; biochemical properties; self-organization; bio-inspired applications
This article discusses the specialized cells called iridocytes in cephalopods and the reflective proteins known as reflectins. It explains their unique characteristics and their application in the field of materials. The article also presents the current research progress and future directions for studying reflectins, emphasizing the importance of interdisciplinary collaboration and knowledge exchange.
Some cephalopods (squids, octopuses, and cuttlefishes) produce dynamic structural colors, for camouflage or communication. The key to this remarkable capability is one group of specialized cells called iridocytes, which contain aligned membrane-enclosed platelets of high-reflective reflectins and work as intracellular Bragg reflectors. These reflectins have unusual amino acid compositions and sequential properties, which endows them with functional characteristics: an extremely high reflective index among natural proteins and the ability to answer various environmental stimuli. Based on their unique material composition and responsive self-organization properties, the material community has developed an impressive array of reflectin- or iridocyte-inspired optical systems with distinct tunable reflectance according to a series of internal and external factors. More recently, scientists have made creative attempts to engineer mammalian cells to explore the function potentials of reflectin proteins as well as their working mechanism in the cellular environment. Progress in wide scientific areas (biophysics, genomics, gene editing, etc.) brings in new opportunities to better understand reflectins and new approaches to fully utilize them. The work introduced the composition features, biochemical properties, the latest developments, future considerations of reflectins, and their inspiration applications to give newcomers a comprehensive understanding and mutually exchanged knowledge from different communities (e.g., biology and material).
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