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Butterfly gyroid nanostructures as a time-frozen glimpse of intracellular membrane development

Wilts, Bodo D.; Apeleo Zubiri, Benjamin; Klatt, Michael A.; Butz, Benjamin; Fischer, Michael G.; Kelly, Stephen T.; Spiecker, Erdmann; Steiner, Ullrich; Schröder-Turk, Gerd E.

Abstract:
The formation of the biophotonic gyroid material in butterflywing scales is an exceptional feat of evolutionary engineering of functional nanostructures. It is hypothesized that this nanostructure forms by chitin polymerization inside a convolutedmembrane of corresponding shape in the endoplasmic reticulum. However, this dynamic formation process, including whether membrane folding and chitin expression are simultaneous or sequential processes, cannot yet be elucidated by in vivo imaging. We report an unusual hierarchical ultrastructure in the butterfly Thecla opisena that, as a solid material, allows high-resolution three-dimensional microscopy. Rather than the conventional polycrystalline spacefilling arrangement, a gyroid occurs in isolated facetted crystallites with a pronounced size gradient.When interpreted as a sequence of time-frozen snapshots of the morphogenesis, this arrangement provides insight into the formation mechanisms of the nanoporous gyroid material as well as of the intracellular organelle membrane that acts as the template.

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Verlagsausgabe §
DOI: 10.5445/IR/1000079730
Veröffentlicht am 16.11.2018
Originalveröffentlichung
DOI: 10.1126/sciadv.1603119
Scopus
Zitationen: 28
Web of Science
Zitationen: 31
Coverbild
Zugehörige Institution(en) am KIT Institut für Stochastik (STOCH)
Publikationstyp Zeitschriftenaufsatz
Jahr 2017
Sprache Englisch
Identifikator ISSN: 2375-2548
urn:nbn:de:swb:90-797304
KITopen-ID: 1000079730
Erschienen in Science advances
Band 3
Heft 4
Seiten Art.Nr. e1603119
Nachgewiesen in Scopus
Web of Science
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