Pretražite po imenu i prezimenu autora, mentora, urednika, prevoditelja

Napredna pretraga

Pregled bibliografske jedinice broj: 738765

Self-assembly of polysaccharides gives rise to distinct mechanical signatures in marine gels


Pletikapić, Galja; Lannon, Herbert; Murvai, Unige; Kellermayer, Mikloš; Svetličić, Vesna; Brujić, Jasna
Self-assembly of polysaccharides gives rise to distinct mechanical signatures in marine gels // Biophysical journal, 107 (2014), 2; 355-364 doi:10.1016/j.bpj.2014.04.065 (međunarodna recenzija, članak, znanstveni)


CROSBI ID: 738765 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Self-assembly of polysaccharides gives rise to distinct mechanical signatures in marine gels

Autori
Pletikapić, Galja ; Lannon, Herbert ; Murvai, Unige ; Kellermayer, Mikloš ; Svetličić, Vesna ; Brujić, Jasna

Izvornik
Biophysical journal (0006-3495) 107 (2014), 2; 355-364

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
marine gel; polysaccharides; self-assembly; force spectroscopy; AFM

Sažetak
Marine-gel biopolymers were recently visualized at the molecular level using atomic force microscopy (AFM) to reveal fine fibril-forming networks with low to high degrees of cross-linking. In this work, we use force spectroscopy to quantify the intra- and intermolecular forces within the marine-gel network. Combining force measurements, AFM imaging, and the known chemical composition of marine gels allows us to identify the microscopic origins of distinct mechanical responses. At the single-fibril level, we uncover force-extension curves that resemble those of individual polysaccharide fibrils. They exhibit entropic elasticity followed by extensions associated with chair-to-boat transitions specific to the type of polysaccharide at high forces. Surprisingly, a low degree of cross-linking leads to sawtooth patterns that we attribute to the unraveling of polysaccharide entanglements. At a high degree of cross-linking, we observe force plateaus that arise from unzipping, as well as unwinding, of helical bundles. Finally, the complex 3D network structure gives rise to force staircases of increasing height that correspond to the hierarchical peeling of fibrils away from the junction zones. In addition, we show that these diverse mechanical responses also arise in reconstituted polysaccharide gels, which highlights their dominant role in the mechanical architecture of marine gels.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Geologija, Biologija



POVEZANOST RADA


Projekti:
098-0982934-2744 - Površinske sile na atomskoj skali u istraživanju mora i nanotehnologiji (Svetličić, Vesna, MZOS ) ( POIROT)

Ustanove:
Institut "Ruđer Bošković", Zagreb

Profili:

Avatar Url Vesna Svetličić (autor)

Avatar Url Galja Pletikapić (autor)

Poveznice na cjeloviti tekst rada:

doi dx.doi.org www.sciencedirect.com

Citiraj ovu publikaciju:

Pletikapić, Galja; Lannon, Herbert; Murvai, Unige; Kellermayer, Mikloš; Svetličić, Vesna; Brujić, Jasna
Self-assembly of polysaccharides gives rise to distinct mechanical signatures in marine gels // Biophysical journal, 107 (2014), 2; 355-364 doi:10.1016/j.bpj.2014.04.065 (međunarodna recenzija, članak, znanstveni)
Pletikapić, G., Lannon, H., Murvai, U., Kellermayer, M., Svetličić, V. & Brujić, J. (2014) Self-assembly of polysaccharides gives rise to distinct mechanical signatures in marine gels. Biophysical journal, 107 (2), 355-364 doi:10.1016/j.bpj.2014.04.065.
@article{article, author = {Pletikapi\'{c}, Galja and Lannon, Herbert and Murvai, Unige and Kellermayer, Miklo\v{s} and Svetli\v{c}i\'{c}, Vesna and Bruji\'{c}, Jasna}, year = {2014}, pages = {355-364}, DOI = {10.1016/j.bpj.2014.04.065}, keywords = {marine gel, polysaccharides, self-assembly, force spectroscopy, AFM}, journal = {Biophysical journal}, doi = {10.1016/j.bpj.2014.04.065}, volume = {107}, number = {2}, issn = {0006-3495}, title = {Self-assembly of polysaccharides gives rise to distinct mechanical signatures in marine gels}, keyword = {marine gel, polysaccharides, self-assembly, force spectroscopy, AFM} }
@article{article, author = {Pletikapi\'{c}, Galja and Lannon, Herbert and Murvai, Unige and Kellermayer, Miklo\v{s} and Svetli\v{c}i\'{c}, Vesna and Bruji\'{c}, Jasna}, year = {2014}, pages = {355-364}, DOI = {10.1016/j.bpj.2014.04.065}, keywords = {marine gel, polysaccharides, self-assembly, force spectroscopy, AFM}, journal = {Biophysical journal}, doi = {10.1016/j.bpj.2014.04.065}, volume = {107}, number = {2}, issn = {0006-3495}, title = {Self-assembly of polysaccharides gives rise to distinct mechanical signatures in marine gels}, keyword = {marine gel, polysaccharides, self-assembly, force spectroscopy, AFM} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus
  • MEDLINE


Citati:





    Contrast
    Increase Font
    Decrease Font
    Dyslexic Font