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Dynamic pigmentary and structural coloration within cephalopod chromatophore organs

Author(s)
Yeo, Jingjie; Martín-Martínez, Francisco J.; Kuzirian, Alan M.; Chen, Chun-Teh; Buehler, Markus J.
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Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/
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Abstract
Chromatophore organs in cephalopod skin are known to produce ultra-fast changes in appearance for camouflage and communication. Light-scattering pigment granules within chromatocytes have been presumed to be the sole source of coloration in these complex organs. We report the discovery of structural coloration emanating in precise register with expanded pigmented chromatocytes. Concurrently, using an annotated squid chromatophore proteome together with microscopy, we identify a likely biochemical component of this reflective coloration as reflectin proteins distributed in sheath cells that envelop each chromatocyte. Additionally, within the chromatocytes, where the pigment resides in nanostructured granules, we find the lens protein Ω- crystallin interfacing tightly with pigment molecules. These findings offer fresh perspectives on the intricate biophotonic interplay between pigmentary and structural coloration elements tightly co-located within the same dynamic flexible organ - a feature that may help inspire the development of new classes of engineered materials that change color and pattern.
Date issued
2019-03-01
URI
https://hdl.handle.net/1721.1/124600
Department
Massachusetts Institute of Technology. Laboratory for Atomistic and Molecular Mechanics; Massachusetts Institute of Technology. Department of Civil and Environmental Engineering
Journal
Nature communicatins
Publisher
Springer Science and Business Media LLC
Citation
Williams, Thomas L. et al. "Dynamic pigmentary and structural coloration within cephalopod chromatophore organs." Nature communicatins 10 (2019): 1038 © 2019 The Author(s)
Version: Final published version
ISSN
2041-1723
Keywords
General Biochemistry, Genetics and Molecular Biology, General Physics and Astronomy, General Chemistry

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