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TitleWater-regulated viscosity-plasticity phase transitions in a peptide self-assembled muscle-like hydrogel.
Journal, issue, pagesNat Commun, Vol. 16, Issue 1, Page 1058, Year 2025
Publish dateJan 26, 2025
AuthorsYu Fang / Junhui Shi / Juan Liang / Dan Ma / Huaimin Wang /
PubMed AbstractThe self-assembly of small molecules through non-covalent interactions is an emerging and promising strategy for building dynamic, stable, and large-scale structures. One remaining challenge is ...The self-assembly of small molecules through non-covalent interactions is an emerging and promising strategy for building dynamic, stable, and large-scale structures. One remaining challenge is making the non-covalent interactions occur in the ideal positions to generate strength comparable to that of covalent bonds. This work shows that small molecule YAWF can self-assemble into a liquid-crystal hydrogel (LCH), the mechanical properties of which could be controlled by water. LCH can be used to construct stable solid threads with a length of over 1 meter by applying an external force on 2 µL of gel solution followed by water-regulated crystallization. These solid threads can support 250 times their weight. Cryogenic electron microscopy (Cryo-EM) analysis unravels the three-dimensional structure of the liquid-crystal fiber (elongated helix with C2 symmetry) at an atomic resolution. The multiscale mechanics of this material depend on the specificity of the molecular structure, and the water-controlled hierarchical and sophisticated self-assembly.
External linksNat Commun / PubMed:39865087 / PubMed Central
MethodsEM (helical sym.)
Resolution3.1 Å
Structure data

60234

8zm0

EMDB-60234, PDB-8zm0:
A self-assembled nanofiber
Method: EM (helical sym.) / Resolution: 3.1 Å

Source
  • synthetic construct (others)
KeywordsDE NOVO PROTEIN / A chemically synthesized peptide that can be self-assembled into nanofiber

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