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. 2011 Dec 21;4:551. doi: 10.1186/1756-0500-4-551

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Copyright ©2011 Khoo et al; licensee BioMed Central Ltd.

This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Only monoubiquitinated p53 species detected in U2OS titrated with LMP2A. Western blot detection of transfected LMP2A-HA, endogenous p53 protein levels and ubiquitinated p53 species in U2OS cells transiently transfected with titrated LMP2A-HA (0.05 - 4.0 μg). For the ubiquitination experiment, p53 protein was immunoprecipitated from the cell lysate with anti-p53 mouse monoclonal antibody (DO-1) and then immunoblotted with anti-ubiquitin rabbit polyclonal antibody. β-actin was served as a loading control in the experiment. Representative blots were quantitated using Image J. No polyubiquitinated p53 protein was seen in LMP2A expressing cells.