Nuclear proteome profile of C57BL/6J mouse liver.

The liver proteome can serve as a reference to better understand both disease mechanisms and possible therapeutics, since the liver is an important organ in the body that performs a large number of tasks. Here we identify the organelle proteome of C57BL/6J mouse liver nuclei as a promising strategy to enrich low abundance proteins, in the sense that analysis of whole liver cells is rather complex for current techniques and may not be suitable for proteins with low abundance. Evaluation of nucleus integrity and purity was performed to demonstrate the effectiveness of the optimized isolation procedure. The extracted nuclear proteins were identified by 2-DE MS analyses, and a total of 748 proteins were identified. Bioinformatic analyses were performed to demonstrate the physicochemical properties, cellular locations and functions of the proteins.