http://synbioproject.tech/cpi/applications/isobutene/
Isobutene is one of the most important petrochemical building blocks that can be converted into fuels, plastics, organic glass, and elastomers. Source
Global Bioenergies’ exclusive process is referred to as an “artificial” metabolic pathway. Compared to other approaches already in use, Global Bioenergies processes do not simply rely on the optimization or exploitation of naturally occurring metabolic pathways, but rely on enzymatic activities and on metabolic intermediates that are not found in nature. These only occur in the microbial strains engineered by the Company. By engineering new functions into natural enzymes, Global Bioenergies has created enzymes with specificity towards non-natural substrates that lead to the synthesis of target molecules. Source