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Updated: Mar 25, 2026
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Western Blotting Using the Invitrogen NuPage Novex Bis Tris MiniGels
Published on: August 22, 2007
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Development of a heat-mediated protein blotting method.
Jack O'Sullivan1, Hilary E M McMahon1
1UCD School of Biomolecular and Biomedical Science, Conway Institute for Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland.
Analytical Biochemistry
|February 13, 2016
Summary
A new heat transfer method improves western blotting for detecting high-molecular-weight proteins, including the previously undetectable 120 KDa neuronal adaptor protein X11α. This technique is effective for both low- and high-molecular-weight proteins.
Area of Science:
- Biochemistry
- Molecular Biology
- Cell Biology
Background:
- Western blotting is a standard technique for protein detection.
- Detecting high-molecular-weight proteins (>100 KDa) via western blotting presents significant challenges.
- Existing western blotting protocols often struggle with the detection of large proteins.
Purpose of the Study:
- To develop an improved heat transfer method for western blotting.
- To enhance the detection of both low- and high-molecular-weight proteins.
- To overcome limitations in detecting large proteins like neuronal adaptor protein X11α.
Main Methods:
- Implementation of a constant temperature of 78 °C.
- Utilizing a dedicated heat transfer module for the western blotting procedure.
- Application of the method to detect endogenous proteins in neuroblastoma cell line (N2a).
Main Results:
- Successfully detected the 120 KDa neuronal adaptor protein X11α in N2a cells, which was previously undetectable.
- The method is suitable for detecting both low- and high-molecular-weight proteins.
- The protocol ensures that low-molecular-weight protein detection is not compromised.
Conclusions:
- The developed heat transfer method significantly improves western blotting sensitivity for high-molecular-weight proteins.
- This reproducible protocol can be adapted for detecting other challenging large proteins.
- The method offers a versatile solution for western blotting across a wide range of protein sizes.
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