Methanosarcina cell (IMAGE) Technische Universität Dresden Caption The acetyl-CoA pathway (black) and methanogenesis (orange) in a Methanosarcina cell. Acetyl-CoA is either used anabolically (green) or catabolically (red); cofactors and enzymes involved are abbreviated, the input of electrons is not shown. Credit Michael Rother Usage Restrictions No License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.