Baer, Alexander ; Hoffmann, Ingo ; Mahmoudi, Najet ; Poulhazan, Alexandre ; Harrington, Matthew J. ; Mayer, Georg ; Schmidt, Stephan ; Schneck, Emanuel (2023)
The Internal Structure of the Velvet Worm Projectile Slime: A Small‐Angle Scattering Study.
In: Small : nano micro, 2023, 19 (22)
doi: 10.26083/tuprints-00024295
Artikel, Zweitveröffentlichung, Verlagsversion
 | Es ist eine neuere Version dieses Eintrags verfügbar. |
Kurzbeschreibung (Abstract)
For prey capture and defense, velvet worms eject an adhesive slime which has been established as a model system for recyclable complex liquids. Triggered by mechanical agitation, the liquid bio‐adhesive rapidly transitions into solid fibers. In order to understand this mechanoresponsive behavior, here, the nanostructural organization of slime components are studied using small‐angle scattering with neutrons and X‐rays. The scattering intensities are successfully described with a three‐component model accounting for proteins of two dominant molecular weight fractions and nanoscale globules. In contrast to the previous assumption that high molecular weight proteins—the presumed building blocks of the fiber core—are contained in the nanoglobules, it is found that the majority of slime proteins exist freely in solution. Only less than 10% of the slime proteins are contained in the nanoglobules, necessitating a reassessment of their function in fiber formation. Comparing scattering data of slime re‐hydrated with light and heavy water reveals that the majority of lipids in slime are contained in the nanoglobules with homogeneous distribution. Vibrating mechanical impact under exclusion of air neither leads to formation of fibers nor alters the bulk structure of slime significantly, suggesting that interfacial phenomena and directional shearing are required for fiber formation.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2023 |
| Autor(en): | Baer, Alexander ; Hoffmann, Ingo ; Mahmoudi, Najet ; Poulhazan, Alexandre ; Harrington, Matthew J. ; Mayer, Georg ; Schmidt, Stephan ; Schneck, Emanuel |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | The Internal Structure of the Velvet Worm Projectile Slime: A Small‐Angle Scattering Study |
| Sprache: | Englisch |
| Publikationsjahr: | 2023 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | 2023 |
| Verlag: | Wiley-VCH |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Small : nano micro |
| Jahrgang/Volume einer Zeitschrift: | 19 |
| (Heft-)Nummer: | 22 |
| Kollation: | 12 Seiten |
| DOI: | 10.26083/tuprints-00024295 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/24295 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung DeepGreen |
| Kurzbeschreibung (Abstract): | For prey capture and defense, velvet worms eject an adhesive slime which has been established as a model system for recyclable complex liquids. Triggered by mechanical agitation, the liquid bio‐adhesive rapidly transitions into solid fibers. In order to understand this mechanoresponsive behavior, here, the nanostructural organization of slime components are studied using small‐angle scattering with neutrons and X‐rays. The scattering intensities are successfully described with a three‐component model accounting for proteins of two dominant molecular weight fractions and nanoscale globules. In contrast to the previous assumption that high molecular weight proteins—the presumed building blocks of the fiber core—are contained in the nanoglobules, it is found that the majority of slime proteins exist freely in solution. Only less than 10% of the slime proteins are contained in the nanoglobules, necessitating a reassessment of their function in fiber formation. Comparing scattering data of slime re‐hydrated with light and heavy water reveals that the majority of lipids in slime are contained in the nanoglobules with homogeneous distribution. Vibrating mechanical impact under exclusion of air neither leads to formation of fibers nor alters the bulk structure of slime significantly, suggesting that interfacial phenomena and directional shearing are required for fiber formation. |
| Freie Schlagworte: | biopolymers, mechano‐responsive, neutron scattering, onychophora, SDS‐PAGE, X‐ray scattering |
| ID-Nummer: | 2300516 |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-242958 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 540 Chemie 500 Naturwissenschaften und Mathematik > 590 Tiere (Zoologie) |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Physik Kondensierter Materie (IPKM) 05 Fachbereich Physik > Institut für Physik Kondensierter Materie (IPKM) > Physik biologischer weicher Materie |
| Hinterlegungsdatum: | 07 Aug 2023 08:17 |
| Letzte Änderung: | 09 Aug 2023 09:40 |
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| Suche nach Titel in: | TUfind oder in Google |
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- The Internal Structure of the Velvet Worm Projectile Slime: A Small‐Angle Scattering Study. (deposited 07 Aug 2023 08:17) [Gegenwärtig angezeigt]
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