Unknown

Dataset Information

0

Silica Nanowires Templated by Amyloid-like Fibrils.


ABSTRACT: Many peptides self-assemble to form amyloid fibrils. We previously explored the sequence propensity to form amyloid using variants of a designed peptide with sequence KFFEAAAKKFFE. These variant peptides form highly stable amyloid fibrils with varied lateral assembly and are ideal to template further assembly of non-proteinaceous material. Herein, we show that the fibrils formed by peptide variants can be coated with a layer of silica to produce silica nanowires using tetraethyl-orthosilicate. The resulting nanowires were characterized using electron microscopy (TEM), X-ray fiber diffraction, FTIR and cross-section EM to reveal a nanostructure with peptidic core. Lysine residues play a role in templating the formation of silica on the fibril surface and, using this library of peptides, we have explored the contributions of lysine as well as arginine to silica templating, and find that sequence plays an important role in determining the physical nature and structure of the resulting nanowires.

SUBMITTER: Al-Garawi ZS 

PROVIDER: S-EPMC4954120 | biostudies-literature | 2015 Nov

REPOSITORIES: biostudies-literature

altmetric image

Publications

Silica Nanowires Templated by Amyloid-like Fibrils.

Al-Garawi Zahraa S ZS   Thorpe Julian R JR   Serpell Louise C LC  

Angewandte Chemie (Weinheim an der Bergstrasse, Germany) 20151005 45


Many peptides self-assemble to form amyloid fibrils. We previously explored the sequence propensity to form amyloid using variants of a designed peptide with sequence KFFEAAAKKFFE. These variant peptides form highly stable amyloid fibrils with varied lateral assembly and are ideal to template further assembly of non-proteinaceous material. Herein, we show that the fibrils formed by peptide variants can be coated with a layer of silica to produce silica nanowires using tetraethyl-orthosilicate. T  ...[more]

Similar Datasets

| S-EPMC4674975 | biostudies-literature
| S-EPMC2526019 | biostudies-literature
| S-EPMC5485726 | biostudies-literature
| S-EPMC3432263 | biostudies-literature
| S-EPMC4864496 | biostudies-literature
| S-EPMC8124345 | biostudies-literature
| S-EPMC4303869 | biostudies-literature
| S-EPMC2635036 | biostudies-literature
| S-EPMC4302294 | biostudies-literature
| S-EPMC6309517 | biostudies-literature