N2O reductase (IMAGE) Van Andel Research Institute Caption Three states of the maturation apparatus of N2O reductase: A complex of the proteins NosF (yellow), NosY (red) and NosD (green) changes its conformation by consuming biochemical energy and can thus take over a copper ion from the transport protein NosL (blue) and pass it on to the enzyme in the next step. Credit Courtesy of the Du and Lü Labs, Van Andel Institute Usage Restrictions Please include attribution. 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.