The Internal Structure of the Velvet Worm Projectile Slime: A Small-Angle Scattering Study

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dc.date.accessioned2023-07-31T13:13:00Z
dc.date.available2023-07-31T13:13:00Z
dc.date.issued2023-02-24
dc.description.sponsorshipGefördert im Rahmen des Projekts DEALger
dc.identifierdoi:10.17170/kobra-202307218451
dc.identifier.urihttp://hdl.handle.net/123456789/14954
dc.language.isoeng
dc.relation.doidoi:10.1002/smll.202300516
dc.relation.projectidMA4147/7-1, MA4147/7-2, SCHM 2748/5-1, SFB 1208, project Z02, Emmy-Noether grant SCHN 1396/1
dc.rightsNamensnennung-Nicht-kommerziell 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/*
dc.subjectbiopolymerseng
dc.subjectmechano-responsiveeng
dc.subjectneutron scatteringeng
dc.subjectonychophoraeng
dc.subjectSDS-PAGEeng
dc.subjectX-ray scatteringeng
dc.subject.ddc570
dc.subject.ddc590
dc.subject.swdBiopolymereger
dc.subject.swdStummelfüßerger
dc.subject.swdSchleimger
dc.subject.swdNeutronenstreuungger
dc.subject.swdRöntgenstreuungger
dc.subject.swdNanostrukturger
dc.titleThe Internal Structure of the Velvet Worm Projectile Slime: A Small-Angle Scattering Studyeng
dc.typeAufsatz
dc.type.versionpublishedVersion
dcterms.abstractFor 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.eng
dcterms.accessRightsopen access
dcterms.creatorBär, Alexander
dcterms.creatorHoffmann, Ingo
dcterms.creatorMahmoudi, Najet
dcterms.creatorPoulharan, Alexandre
dcterms.creatorHarrington, Matthew James
dcterms.creatorMayer, Georg
dcterms.creatorSchmidt, Stephan
dcterms.creatorSchneck, Emanuel
dcterms.source.articlenumber2300516
dcterms.source.identifiereissn:1613-6829
dcterms.source.issueIssue 22
dcterms.source.journalSmalleng
dcterms.source.volumeVolume 19
kup.iskupfalse

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