On which model systems can the formation of coacervate drops in solution be demonstrated?

For example, a coacervate drop formed from protein, gum arabic and phosphorylase is immersed in a solution of glucose-1-phosphate. Glucose-1-phosphate begins to enter the drop and polymerizes in it into starch under the action of a catalyst – phosphorylase. The processes that occur and the coacervate drop are shown in square brackets, and outside of them are substances that are in the external and the environment:
glucose-1-phosphate -> [glucose-1-phosphate -> starch -> maltose] -> maltose.
Due to the formed starch, the drop grows, which can easily be established both by chemical analysis and direct microscopic measurements. If another catalyst, b-amylase, is included in the drop, the starch decomposes to maltose, which is released into the external environment.
Thus, a simple metabolism occurs. The substance enters a drop, polymerizes, causing the growth of the system. And with the decay of substances, the products of this process go into the external environment, where they previously were not.

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