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. 2019 Jul 29;9(3):63. doi: 10.3390/life9030063

Figure 1.

Figure 1

(a) Case 1. Reaction network and mass transfer processes used in the model of enzyme, EH, in a cell in a reservoir of constant substrate Sr and acid Hr, and rate as a function of pH for the enzyme-catalyzed reaction. For simplicity, + and − charges are not shown. (b) Case 2. Illustration of a group of enzyme cells, each of volume Vj, in an outer solution (droplet) of volume VT in which base-catalyzed gelation/precipitation (Co -> Cm) can take place. The outer solution is connected to a constant supply of substrate Sr and acid Hr from a reservoir.