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Figure 1 | Biology Direct

Figure 1

From: An extension of the coevolution theory of the origin of the genetic code

Figure 1

Biosynthetic relationships between amino acids, as defined by their biosyntheses and their relationships with the glycolytic pathway and the citric acid cycle. The figure was taken from Taylor and Coates [11] with a few modifications. The numbers indicate the biosynthetic steps. DAP = diaminopimelic pathway, aKG = alpha-ketoglutarate, OOA = oxalacetic acid, PEP = phosphoenolpyruvate, PGA = phosphoglycerate, R-P3 = 5-phosphoribosylpyrophosphate, Ru-5-P = ribulose-5-phosphate. The other abbreviations are standard.

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