II-Beta Form of Protein Kinase A (IMAGE) University of Utah Health Caption With a background of scattered neutrons, this image shows a model of the II-beta form of PKA. A neutron beam used for imaging (behind gray circle) helped researchers identify a region of II-beta that is likely to give PKA its unique shape. Credit William Heller, Oak Ridge National Laboratory Usage Restrictions Must be used for news media stories only. 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.