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. 2018 Nov 7;70(1):231–242. doi: 10.1093/jxb/ery355

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© The Author(s) 2018. Published by Oxford University Press on behalf of the Society for Experimental Biology.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 1. — Elementary reactions of Rubisco-catalyzed carboxylation and oxygenation (Farquhar,1979). Each reaction, forward and reverse, is numbered in a filled circle following the numbering from Farquhar (1979). Steps 8 and 5 are written as irreversible reactions. Step 8 includes cleavage, hydration, and reprotonation as a single step. Step 5 includes cleavage and hydration as a single step. Each step is associated with a rate constant (k) and energy of activation (ΔG^‡) following the same numbering as shown in the filled circles. Abbreviations are as follows: E, free activated enzyme; RuBP, d-ribulose-1,5-bisphosphate; E-RuBP; enzyme-bound RuBP; E-Enediol, enzyme-bound 2,3-enediolate form of RuBP; CO₂, carbon dioxide; E-CKABP, enzyme-bound carboxyketone intermediate; PGA, 3-phospho-d-glycerate; O₂, oxygen; E-PKABP, peroxo intermediate; PGO, 2-phosphoglycolate.