Main Reaction: 2 aetyl-CoA + 4 NADH >> 4 NAD+ +butanol

Reference: PubMed ID: 26788124
Authors: Choi O, Sang BI
Title: Extracellular electron transfer from cathode to microbes: application for biofuel production.
Published: 2016 Jan 19

2 aetyl-CoA + 4 NADH --> 4 NAD + butanol