Siderophore Holding Iron (IMAGE) Washington University in St. Louis Caption A siderophore called fluvibactin made by the bacterium Vibrio cholera (blue structure) that has bound an iron atom (pink sphere). Credit generated using PDB file 4K19 (Allred, B. E.; Correnti, C.; Clifton, M. C.; Strong, R. K.; Raymond, K. N. ACS Chemical Biology 2013, 8, 1882-1887). 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.