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. 2014 Oct 10;5:528. doi: 10.3389/fmicb.2014.00528

FIGURE 1.

FIGURE 1

Overview of the production of advanced biofuel precursors or products described with Gene Ontology (GO) terms. Advanced alcohols such as isopropanol and butanol are synthesized via the CoA-dependent pathways; isobutanol, and other branched chain alcohols are produced via the keto-acid pathway and isopentenol via the isoprenoid pathway. Other advanced biofuel products, which include alkanes, alkenes and fatty methyl esters, are derived from fatty acid biosynthesis. Fuel products or their precursors are shown in sky blue shaded boxes. GO descriptions of the biological processes involved in the biosynthesis are shown in tan-shaded boxes. Relevant references are in the text.