S. Meiyappan R. Raghavan R. Viswanathan Y. Yu W. Lawton Proteinmorphosis: A Mechanical Model for Protein Conformational Changes. 341-353 1999 Pacific Symposium on Biocomputing http://psb.stanford.edu/psb-online/proceedings/psb99/Meiyappan.pdf db/conf/psb/psb1999.html#MeiyappanRVYL99