Figure 5 | Scientific Reports

Figure 5

From: Building the uracil skeleton in primitive ponds at the origins of life: carbamoylation of aspartic acid

Figure 5

Left: pH dependence of transformed Gibbs free energy of reaction for biotic and abiotic NCA formation equilibria from aspartate and carbamate (a), urea (b), cyanate (c), carbamoyl phosphate (d), and biuret (e). The values are calculated for pMg = 5, ionic strength = 1 M. Right: the corresponding reactions, conventionally written with all reagents in the fully protonated form.

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