Effect of the concentration of protein and nanoparticles on the structure of biohybrid nanocomposites.
Biopolymers
; 111(2): e23342, 2020 Feb.
Article
em En
| MEDLINE
| ID: mdl-31794056
ABSTRACT
We present colloidal nanocomposites formed by incorporating magnetite Fe3 O4 nanoparticles (MNPs) with lysozyme amyloid fibrils (LAFs). Preparation of two types of solutions, with and without addition of salt, was carried out to elucidate the structure of MNPs-incorporated fibrillary nanocomposites and to study the effect of the presence of salt on the stability of the nanocomposites. The structural morphology of the LAFs and their interaction with MNPs were analyzed by atomic force microscopy and small-angle x-ray scattering measurements. The results indicate that conformational properties of the fibrils are dependent on the concentration of protein, and the precise ratio of the concentration of the protein and MNPs is crucially important for the stability of the fibrillary nanocomposites. Our results confirm that despite the change in fibrillary morphology induced by the varying concentration of the protein, the adsorption of MNPs on the surface of LAF is morphologically independent. Moreover, most importantly, the samples containing salt have excellent stability for up to 1 year of shelf-life.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Muramidase
/
Nanocompostos
/
Nanopartículas de Magnetita
/
Amiloide
Idioma:
En
Revista:
Biopolymers
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
Eslováquia