domain By Ivan Suarez Robles 15 Nov, 2010 A region of a polypeptide chain that independently folds into a structural unit within a protein.Related Articles: HOPES PodcastHOPES Podcast Episode 12: Talk to the Doc: How Can We Expand Access to HD Care? ft. Dr. Alexandra DuffyHuntingtin Protein and Protein AggregationXIAP Gene Therapy"Normal" huntingtin and Huntington's disease