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. 2016 May 11;7:694. doi: 10.3389/fmicb.2016.00694

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Copyright © 2016 Liew, Martin, Tappel, Heijstra, Mihalcea and Köpke.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Overview of Wood-Ljungdahl pathway (WLP) and energy conserving mechanisms of acetogen C. autoethanogenum. The WLP is central to the gas fermentation platform for carbon fixation. Noteworthy enzymes are in labeled in blue. The enzymes involved in energy conservation are shown in purple. Acronyms: 2,3-BDO, 2,3-butanediol; AOR, aldehyde:ferredoxin oxidoreductase; ACS, acetyl-CoA synthase; CODH, carbon monoxide dehydrogenase; Nfn, transhydrogenase; PFOR, pyruvate:ferredoxin oxidoreductase; Rnf, Rhodocbacter nitrogen fixation; THF, Tetrahydrofolate; WGS, water-gas shift reaction.