Requirements and attributes of nano-resonator mass spectrometry for the analysis of intact viral particles.
Anal Bioanal Chem
; 413(29): 7147-7156, 2021 Dec.
Article
en En
| MEDLINE
| ID: mdl-34235570
When studying viruses, the most prevalent aspects that come to mind are their structural and functional features, but this leaves in the shadows a quite universal characteristic: their mass. Even if approximations can be derived from size and density measurements, the multi MDa to GDa mass range, featuring a majority of viruses, has so far remained largely unexplored. Recently, nano-electromechanical resonator-based mass spectrometry (NEMS-MS) has demonstrated the ability to measure the mass of intact DNA filled viral capsids in excess of 100 MDa. However, multiple factors have to be taken in consideration when performing NEMS-MS measurements. In this article, phenomena influencing NEMS-MS mass estimates are listed and discussed, including some particle's extraneous physical properties (size, aspect ratio, stiffness), and the influence of frequency noise and device fabrication defects. These factors being accounted for, we could begin to notice subtler effects linked with (e.g.) particle desolvation as a function of operating parameters. Graphical abstract.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Espectrometría de Masas
/
Virión
/
Nanoestructuras
Idioma:
En
Revista:
Anal Bioanal Chem
Año:
2021
Tipo del documento:
Article
País de afiliación:
Francia
Pais de publicación:
Alemania