[問題] GST-Fusion Protein的純化
用IPTG induction完 加triton sonication後離心的上清液
跑SDS-PAGE可明顯看到我要的 protein band
但用 glutathion sepharose 純化完 protein 濃度很低
以下是我的 protocol
將 glutathion sepharose 4B 4c.c. 裝入column
wash 2X wish cold PBS
wash 1X wish cold PBST
加 protein 上清液 (bind 2 hrs shack 4度C)
wash 2X wish cold PBST
wash 1X wish cold PBS
elute wish 20mM glutathion reduced
請達人們幫我看看哪裡出問題
向各位求教了
謝謝
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