Send to

Choose Destination
J Immunol Methods. 2007 Jan 10;318(1-2):11-9. Epub 2006 Nov 2.

A cost effective non-commercial ECL-solution for Western blot detections yielding strong signals and low background.

Author information

Laboratoire de Biologie et Physiologie Intégrée, Fac. Science Techno. and Com., Université du Luxembourg, 162a, Avenue de la Faïencerie, L-1511 Luxembourg, Luxembourg.


We compared several alternative ECL solutions for Western blot detection of endogenous proteins in whole cell lysates using inexpensive, commercially available reagents. Starting from an existing protocol based on p-coumaric acid (pCA) as enhancer, we found that the ECL solution containing 4-iodophenylboronic acid (4IPBA) generated strong specific signals and low background chemiluminescence. We optimised the luminol, 4IPBA and hydrogenperoxide concentrations of this 4IPBA-ECL solution. The optimised 4IPBA-ECL solution (100 mM Tris/HCl pH 8.8, 1.25 mM luminol, 2 mM 4IPBA, 5.3 mM hydrogenperoxide) shows a greatly increased signal intensity compared to the initial pCA-ECL protocol and to some commercially available ECL solutions. In addition, the optimised 4IPBA-ECL solution also generates much lower background chemiluminescence than other non-commercial ECL solutions using p-coumaric acid or 4-iodophenol as enhancers. The 4IPBA-ECL solution was stable when stored but had the lowest background when prepared freshly from stock solutions. Thus, we present an optimised protocol for a well-performing inexpensive ECL solution which is an alternative to expensive commercial ECL solutions and which achieves a better signal and lower background than the commercial solutions tested.

[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center