Main Reaction: 2 [H] + CO2 (Carbonyl branch) >> [CO] +2 H2O

Reference: PubMed ID: 22710156
Authors: Schiel-Bengelsdorf B, Dürre P
Title: Pathway engineering and synthetic biology using acetogens.
Published: 2012 Jul 16

2 [H] + CO2 (Carbonyl branch) --> [CO] + 2 H2O