Research Video (video) Beckman Institute for Advanced Science and Technology Share Print E-Mail Loading video... Caption As demonstrated in this video, the reactive amines are located all over the structure of the streptavidin tetramer. Credit Video prepared using VMD by Rafael C. Bernardi. Usage Restrictions Video prepared using VMD by Rafael C. Bernardi. 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.