MbnB Protein Structure (IMAGE) Northwestern University Caption This is the structure of the MbnB protein, which is partially responsible for the production of methanobactin. Credit Amy Rosenzweig Lab, Northwestern University Usage Restrictions None License Licensed 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.