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. 2019 May 2;31(7):1648–1664. doi: 10.1105/tpc.18.00787

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© 2019 The author(s). All rights reserved.

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

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Figure 3. — Changes in Carboxysome Protein Stoichiometry upon Increases in CO₂ Levels and Light Intensity.

(A) Comparison of carboxysome protein stoichiometry under CO₂ treatment. Increase in the CO₂ concentration resulted in the rise of CcmK3, CcmK4, CcaA, and CcmL contents and the decline of RbcS, CcmN, and CcmM contents.

(B) Comparison of carboxysome protein stoichiometry under light intensity treatment. Increased light intensity led to the elevation of RbcS, CcmM, CcmL, CcaA, and CcmN contents, whereas the abundance of RbcX, CcmK3, and CcmK4 contents per carboxysome did not change dramatically.

Mann-Whitney U-tests were performed to compare the numbers of functional units of individual carboxysome proteins changed from CO₂/ML to Air/ML (A) and from HL to LL (B). *P < 0.05; ***P < 0.005; ns, P > 0.05.