Abstract: The present invention relates to methods for isolating polypepitdes from cells. The methods may be used to isolate denatured polypeptides or native polypeptides. In one embodiment the methods may be used to isolated polypeptide from cytosolic and nuclear compartments of eukaryotic cells. In one embodiment the methods may be used to isolate polypeptides from bacterial cells.
Abstract: Disclosed herein are methods for quickly obtaining crude membranes from cells, including animal and plant cells. The methods include incubating cells in a buffer and forcing the cells through a filter that causes rupture of the cells, and then separating the resulting crude membranes from most cytosolic proteins.
