2a:I[18908,["7337","static/chunks/ad2866b8-da1c65c6e9840024.js","7503","static/chunks/7503-db59db4643103217.js","8064","static/chunks/8064-f62a56104c03a172.js","1414","static/chunks/1414-ed9c938aef25cf6a.js","7495","static/chunks/7495-4dc9bea4e9d74cb7.js","3878","static/chunks/3878-3c5591c88efee0cf.js","99","static/chunks/99-6f3ada81458ccdd5.js","6407","static/chunks/6407-726701ccafdac49d.js","1831","static/chunks/1831-2b8fb41139465247.js","1285","static/chunks/1285-190383743bec0ddb.js","1651","static/chunks/1651-4e557ca151c394cb.js","808","static/chunks/808-1b271ff3f41465f8.js","336","static/chunks/336-c9895bd1311117fb.js","3669","static/chunks/3669-22f76093a6f84ca3.js","719","static/chunks/719-902e9e432f6f1573.js","1138","static/chunks/1138-f3cdd7f2772e51e1.js","3812","static/chunks/app/post/%5Bid%5D/(overview)/page-25fb5389cfaa6f78.js"],"default"] 2b:T67f,

图一红框是纯化的GST蛋白的条带，-80保存大约10天，使用超滤管更换缓冲液后进行SDS-PAGE，结果如图二。出现图二这种两个条带的情况是什么原因，求教各位大佬。

GST标签蛋白SDS-PAGE电泳胶中出现两条条带

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