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. 2020 May 15;6:14. doi: 10.1038/s41540-020-0135-y

Fig. 4. Unraveling interactions among high nitrogen content of histidine and arginine, free energy, and biosynthetic cost.

Fig. 4

Correlation of calculated biosynthetic costs of amino acids for C. vulgaris under phototrophy and heterotrophy and their respective standard Gibbs free energies of formation (ΔGf0 in kcal mole−1) retrieved from BioCyc54. High free energy groups are highlighted in red, low ones in blue, and their contributions according to the Joback’s method34 are shown.