Swinging Arm Artificial Enzymes Using DNA Nanotechnology (video) Arizona State University Share Print E-Mail Loading video... Caption In the middle of a DNA scaffold is affixed a single strand of DNA, with NAD+ tethered to the end like a ball and string. ASU Professor Han Yan refers to this as a swinging arm, which is long, flexible and dexterous enough to rock back and forth between the enzymes in the blink of the eye to catalyze a reaction. Credit Jason Drees, The Biodesign Institute at ASU Usage Restrictions None 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.