Dancing Proteins (IMAGE) University at Buffalo Caption Changes in vibrational direction with binding. Protein vibrations indicating (a) a clamping motion around the binding site at 55 cm?1 from NMA of free CEWL and (b) a twisting around the binding site. Credit Reprinted with permission of Biophysical Journal. 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.