Gaurav DNA model (IMAGE) University of California - San Diego Caption UCSD nanoengineering professor Gaurav Arya has developed new computational models of chromatin -- a key player in DNA regulation -- that suggests that its structure is heteromorphic (bottom graphic) from anaylsis of the interaction pattern between nucleosomes in the fiber (top graphic). Credit UC San Diego Usage Restrictions Credit UC San Diego 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.