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Progress in Earth and Planetary Science
Fig. 4 | Progress in Earth and Planetary Science

Fig. 4

From: A new insight into isotopic fractionation associated with decarboxylation in organisms: implications for amino acid isotope approaches in biogeoscience

Fig. 4

a Possible scenarios of the isotopic fractionation during deamination of amino acids and b decarboxylation of pyruvic and α-ketoglutaric acids: the fractionation is caused by forming of C-N or C-C bond. Asterisk indicates atoms where isotopic fractionation occurs. Yellow highlight indicates reaction points accompanied with the isotopic fractionation

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