4.1.1.99	synthesis	isopentenol production in Escherichia coli by utilizing phosphomevalonate decarboxylase and Escherchia coli-endogenous phosphatase AphA. The enzymes bypass the isopentenyl diphosphate mevalonate pathways, have reduced energetic requirements, are further decoupled from intrinsic regulation, and are free from isopentenyl diphosphate-related toxicity. Reduced aeration rate has less impact on the bypass pathway than the original mevalonate pathway. The performance of the bypass pathway is primarily determined by the activity of phosphomevalonate decarboxylase	-, 748553