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One day, a colleague stopped by my workbench to ask which detergent would not break the nuclear membrane. Based on my previous experience using gentle detergents in lysis buffers, I replied, “NP-40”. However, we had two brands of NP-40. A closer look at the datasheets revealed that the chemical names were different even though they…
Negative staining of proteins is a versatile tool for structural biology. The sample preparation protocol is simple: the sample is embedded in a heavy metal stain that gives rise to increased specimen contrast. Thus, negative staining is a very convenient method to assess sample homogeneity, formation of macromolecular complexes, or quality of protein preparation. Conventional…
You’ve cultured your cells and completed your treatments, now it’s time to harvest them and proceed to the downstream effects. Cell lysis is the crucial stage that determines if your experiment has a chance of producing the data that you have been waiting for. Part of the starting biological material is inevitably lost on each…
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