Dynamic Duo: Nitrogenase Electron Pathways (video) Utah State University Share Print E-Mail Loading video... Caption Two halves of nitrogenase work in tandem to regulate electron movements, an unusual observation in catalysis. Credit PNNL Usage Restrictions Please credit PNNL. Share Print E-Mail 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.