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A Toolkit to Enable Hydrocarbon Conversion in Aqueous Environments

A Toolkit to Enable Hydrocarbon Conversion in Aqueous Environments

Published on: October 2, 2012

Microbial biosynthesis of alkanes.

Andreas Schirmer¹, Mathew A Rude, Xuezhi Li

¹LS9, Inc., 600 Gateway Boulevard, South San Francisco, CA 94080, USA. aschirmer@ls9.com

Science (New York, N.Y.)

|July 31, 2010

Summary

Scientists discovered a new pathway in cyanobacteria for producing alkanes, which are key components of fuels like gasoline. This breakthrough enables the conversion of renewable resources into usable hydrocarbon fuels.

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Area of Science:

Biochemistry
Metabolic Engineering
Synthetic Biology

Background:

Alkanes are major components of hydrocarbon fuels, but their natural biosynthesis pathways are largely unknown.
Understanding alkane production in organisms is crucial for developing sustainable fuel sources.

Purpose of the Study:

To discover and elucidate the genetic and biochemical basis of alkane biosynthesis in cyanobacteria.
To enable the production of alkanes from renewable resources for fuel applications.

Main Methods:

Identification and characterization of genes involved in alkane production in cyanobacteria.
Heterologous expression of the identified alkane biosynthesis operon in Escherichia coli.

Main Results:

Discovery of a novel alkane biosynthesis pathway involving acyl-acyl carrier protein reductase and aldehyde decarbonylase.
Successful heterologous expression in E. coli resulted in the production and secretion of C13-C17 alkanes and alkenes.
The aldehyde decarbonylase enzyme is related to nonheme diiron enzymes.

Conclusions:

The identified pathway provides a genetic and enzymatic basis for alkane biosynthesis in cyanobacteria.
This discovery opens avenues for leveraging these genes and enzymes for the direct conversion of renewable feedstocks into hydrocarbon fuels.