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Figure 2 | BMC Microbiology

Figure 2

From: Linking genome content to biofuel production yields: a meta-analysis of major catabolic pathways among select H2and ethanol-producing bacteria

Figure 2

Differentiation between fermentation pathways that favor (A) hydrogen and (B) ethanol production based on comparative genomics and end-product profiles. Pathways that favor (green lines), disfavor (broken red lines), and appear to have little impact (black lines) on production of H2 or ethanol are indicated. Correlation of reaction thermodynamics and genome content with reported end-product yields suggest that reduction, and subsequent reoxidation, of ferredoxin via PFOR and Fd-dependent (and/or bifurcating) H2ases, respectively, support H2 production. Alternatively, reduction, of NAD+ via PDH (and/or NADH generating uptake H2ases) generate NADH conducive for ethanol production. Abbreviations (see figure 1 legend).

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BMC Microbiology

ISSN: 1471-2180

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