(IMAGE) Goethe University Frankfurt Caption The filaments of the bacterial enzyme HDCR, which produces formic acid from gaseous H2 and CO2, are wound around each other like a plait. Credit Verena Resch -- https://luminous-lab.com/ Usage Restrictions To be used only when reporting on the publication mentioned in the press release. 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.