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. 2015 Dec 11;10(6):1383–1399. doi: 10.1038/ismej.2015.214

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Copyright © 2015 International Society for Microbial Ecology

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/4.0/

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Metabolic scheme of predicted pathways that are either unique to the pan-genome of Ca. Nitromaritima RS (in red), encoded only in the genome of Nitrospina gracilis (in blue), shared by both (in purple), present in all Nitrospina-like genomes (in black), or only in the other Ca. Nitromaritima SAGs (in brown). Dashed black arrows and a question mark symbol denote uncertain reactions, whereas grey and thick black arrows show the oxidative tricarboxylic acid cycle and the methylcitrate (anaplerotic) pathways, respectively. Important enzymes discussed in the main text are indicated with an oval shape: (1) phosphoenolpyruvate carboxykinase, (2) oxaloacetate decarboxylase, (3) pyruvate:ferredoxin oxidoreductase, (4) pyruvate dehydrogenase, (5) pyruvate-water dikinase, (6) ATP-dependent citrate lyase, (7) succinyl-CoA synthase, (8) oxoglutarate:ferredoxin oxidoreductase, (9) methylcitrate lyase, (10) methylcitrate dehydratase, (11) aconitase, (12) 2-methylisocitrate synthase, (13) NAD⁺-dependent malic enzyme, (14) proline dehydrogenase, (15) 5-oxoprolinase. NPA, sodium/proton antiporter; NSS, sodium:solute symporter; Trk, a potassium uptake system.