Main Reaction: reduced ferredoxin >> oxidized ferredoxin + hydrogen

Reference: PubMed ID: 14708125
Authors: Tummala SB, Junne SG, Paredes CJ, Papoutsakis ET
Title: Transcriptional analysis of product-concentration driven changes in cellular programs of recombinant Clostridium acetobutylicumstrains.
Published: 2003 Dec 30

reduced ferredoxin --> oxidized ferredoxin + hydrogen