Spliceosome Video (1 of 3) (VIDEO) UMass Chan Medical School This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption Video of spliceosomes -- the complex of specialized RNA and protein subunits that acts as molecular scissors and tape during gene transcription -- at work. Credit University of Massachusetts Medical School, Brandeis University and Columbia University Usage Restrictions Please contact UMMS Office of Communications prior to use. 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.