The present invention relates to a selectively soluble polymer capable of binding to a desired biomolecules in a mixture containing various biological materials and the methods of using such a polymer to purify a biomolecule from such a mixture. The polymer is soluble in the mixture under a certain set of process conditions such as pH or temperature and/or salt concentration and is rendered insoluble and precipitates out of solution upon a change in the process conditions. The polymer is capable of binding to the desired biomolecule (protein, polypeptide, etc) and remains capable of binding to that biomolecule even after the polymer is precipitated out of solution. The precipitate can then be filtered out from the remainder of the stream and the desired biomolecule is recovered such as by elution and further processed.
本发明涉及一种可选择溶解的聚合物,能够与混合物中含有各种
生物材料的所需
生物分子结合,并使用这种聚合物从这种混合物中纯化
生物分子的方法。该聚合物在一定的工艺条件下,如pH值、温度和/或盐浓度下溶解于混合物中,并在工艺条件发生变化时变得不溶并从溶液中沉淀出来。该聚合物能够与所需的
生物分子(蛋白质、
多肽等)结合,并即使在聚合物从溶液中沉淀出来后仍能保持与该
生物分子结合的能力。然后可以将沉淀物从其余流体中过滤出来,并通过洗脱等方式回收所需的
生物分子,然后进一步处理。