Discovery of Amphoteric Fingerprints of Amino Acids With Field-Effect Transistors

Autor: Naveen Kumar, Rakshita Pritam Singh Dhar, Janwa El Maiss, Vihar Georgiev, Cesar Pascual Garcia
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: IEEE Access, Vol 12, Pp 134085-134090 (2024)
Druh dokumentu: article
ISSN: 2169-3536
DOI: 10.1109/ACCESS.2024.3411168
Popis: When working with a few molecules, the existing protein sequencing technologies lack the single-site amino acid (AA) precision required to detect abnormalities that escape genome analysis. We offer a new method for identifying AAs and short polypeptides using the signal from the surface potential and capacitance obtained from Field Effect Transistor (FET) sensors. Using a combination of the Site-binding and Gouy-Chapman-Stern (GCS) models, we found the signatures of every single AA and polypeptides. These fingerprints are based on orthogonal features such as the proton dissociation constants of each AA’s charging sites, the dielectric constant, and the effective length.
Databáze: Directory of Open Access Journals