小中大請教個問題,我做出來的蛋白分子量在60kD 左右,可是,我的目標蛋白是pSTAT3,大概80kD左右。高手們,這是啥問題呢?蛋白被降解了么?以下是我用的實驗條件。
cells were lysised by RIPA with protease inhibitor (EDTA-free)
total protein load is about 3ug
10% Bio-Rad gel, 200V for 20min for SDA page
100V for 20min for transfering
5% non-fat milk block 1h; primary antibody 1:2000 incubate overnight; secondary antibody 1:2000 incubate 1h
非常感謝!
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1、没有加蛋白抑制剂及磷酸酶抑制剂?
2、用BSA封闭及孵育抗体
3、样品跑完电泳,SDS-PAGE,用考马斯亮蓝染胶了吗?