FlaI Hexamer (image) DOE/Lawrence Berkeley National Laboratory Caption FlaI monomers arrange themselves into six-unit rings resembling a crown. Releasing a phosphate from ATP energizes a series of conformational changes that drive assembly and motility of the archaellum. Credit Reindl et al, Berkeley Lab and MIP Usage Restrictions with credit as given 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.