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[求助] 植物蛋白提取纯化时的试剂配制及蛋白电泳

准备做小麦淀粉分支酶电泳,之前没有做过,文献中找到提取液配方,【50 mM phosphate buffer, pH 7.5 containing 5 mM EDTA, 5 mM DTT, 0.4% protease inhibitor cocktail and 20% glycerol】这里的phosphate buffer是用磷酸二氢钠和磷酸二氢钾配制么?具体该怎么操作哇?还有后面说包含EDTA,DTT等,是把相关东西都加进去,最后配制成50mM,pH7.5的磷酸盐缓冲液么?还有就是文章里面说电泳时分离胶里加了β-limit dextrin,请问有人用过极限糊精么?谢谢。
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