膜蛋白如何提取及纯化?cells were washed, resuspended in ice-cold PBS, and disrupted with a tissue homogenizer (three 10 second periods) in the presence of anti-protease cocktail (Sigma Aldrich). Whole cells, nuclei, and other large debris were cleared by centrifugation at 300 × g for 10 min at 4°C and the particulate fraction (crude membrane fraction) of the cleared supernatant was separated by microcentrifugation at maximum speed for 30 min. The protein content was determined by standard BSA protein assay.不知道是否适合你的实验 查看更多