Thiophene-Conjugated Ligand Probe for Nonenzymatic Turn-On Electrochemical Protein Detection.
Anal Chem
; 90(19): 11179-11182, 2018 10 02.
Article
en En
| MEDLINE
| ID: mdl-30175583
ABSTRACT
A new type of turn-on electrochemical protein detection is developed using an electropolymerizable molecular probe. To detect trypsin, a benzamidine ligand is conjugated with a thiophene moiety. Encapsulation of the probe in the trypsin pocket prevents electropolymerization, leading to efficient electron transfer from the electrolyte to the electrode. In contrast, unbound probes can become electropolymerized, yielding a polythiophene layer on the electrode. The polythiophene formed this way suppressed electron transfer. The detection limit of trypsin using this electrochemical strategy is 50 nM. The method is shown to be useful for nonenzymatic turn-on electrochemical detection.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Polímeros
/
Tiofenos
/
Tripsina
/
Sondas Moleculares
Tipo de estudio:
Diagnostic_studies
Idioma:
En
Revista:
Anal Chem
Año:
2018
Tipo del documento:
Article
País de afiliación:
Japón