The present invention provides for a system for converting CO.sub.2 and H.sub.2 to one or more biologically derived compounds. In some embodiments, the system comprises a host cell comprising one or more nucleic acids encoding genes for a recombinant surface display protein which is capable of tethering an electrocatalyst molecule, such as a cobalt(II) complex supported by tetradentate polypyridyl ligand 2-bis(2-pyridyl)(methoxy)methyl-6-pyridylpyridine (PY4), and enzymes for synthesizing a biologically derived compound, such as an alkane, alcohol, fatty acid, ester, or isoprenoid.
STATEMENT OF GOVERNMENTAL SUPPORT
 The invention described and claimed herein was made utilizing funds supplied by the U.S. Department of Energy under Contract Nos. DE-ACO2-05CH11231 and DE-0000206-1577 (Advanced Research Projects Agency-Energy Electrofuels Program). The government has certain rights in this invention.