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. 2015 Dec 7;112(51):15585–15590. doi: 10.1073/pnas.1504493112

Fig. 1.

Fig. 1.

Overview of metabolic pathways emanating from RubP by Rubisco activity. Upon carboxylation, 3-phosphoglycerate (3-PGA) molecules are formed from C1−C2 and C3−C5 of RuBP. Upon oxygenation, one 3-PGA molecule is formed from C3−C5 of RubP, and up to one-half 3-PGA is formed via the photorespiration pathway through the peroxisome and mitochondrion. The color coding of hydrogen atoms tracks the biochemical origins of hydrogens at C3 of 3-PGA, which give rise to the isotopomer signal encoded in the colored C6H2 group of glucose.