A sensitive electrochemical protein quantification method

被引：0

作者：

Schwarz, A ^{[1
]}

Bagel, O ^{[1
]}

Girault, HH ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Lab Electrochim, CH-1015 Lausanne, Switzerland

来源：

ELECTROANALYSIS | 2000年 / 12卷 / 11期

关键词：

protein assay; biuret reaction; electrochemical detection; copper;

D O I：

10.1002/1521-4109(200007)12:11<811::AID-ELAN811>3.0.CO;2-8

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

This article presents a sensitive electrochemical method for the quantification of proteins. The assay used the biuret reaction, which is based on the complexation of proteins with copper ions to form a copper-protein complex. In the present approach, once copper ions were complexed with the protein, they were released by an acidic treatment and simultaneously separated by ultracentrifugation from the protein sample. This allowed differential pulse anodic stripping voltammetry (DPASV) of Cu2+ on carbon rotogravure printed electrodes (CARPEs). A nM detection limit for bovine serum albumin (BSA) was found with this method. The kinetics of this assay were tested and it resulted that the total assay can be carried out in 27 min, including incubation, washing steps and detection.

引用

页码：811 / 815

页数：5

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